Method and device for sending control channel

ABSTRACT

Disclosed is a method for sending a control channel. The method includes: a first communication node determining second transmission parameter information about the control channel according to at least one of first control information or first parameter information and sending the control channel to a second communication node according to the second transmission parameter information. The first parameter information includes at least one of the following information: information about a type of second control information transmitted on the control channel, time resource information of the first control information, or CSI comprised in the first control information. Further disclosed are a device for sending a control channel, a method for receiving a control channel and a device for receiving a control channel.

CROSS REFERENCE TO RELATED APPLICATIONS

This is a National Stage Application, filed under 35 U.S.C. 371, ofInternational Patent Application No. PCT/CN2017/109607, filed on Nov. 6,2017, which claims priorities to Chinese patent application No.201610966223.2, filed on Nov. 4, 2016, and Chinese patent applicationNo. 201710184880.6, filed on Mar. 24, 2017, contents of both of whichare incorporated herein by reference in their entireties.

TECHNICAL FIELD

The present invention relates to communications and relates to, forexample, a method and device for sending a control channel.

BACKGROUND

In the 5^(th) New Radio (5G-NR) RAN1 86b meeting, the followingconclusion was reached: an uplink control channel with a long durationand an uplink control channel with a short duration need to beconsidered. The uplink control channel with the long duration occupies alarge number of time-domain symbols, while the uplink control channelwith the short duration occupies a small number of time-domain symbols.

In one timeslot, different users or different control channels mayrequire different numbers of time-domain symbols, so that controlchannels occupying different numbers of time-domain symbols may exist inone timeslot at the same time. The problem needs to be considered andsolved is how to allocate the uplink control channel with the longduration and the uplink control channel with the short duration so as tomake the quantity of resource fragments left to an uplink data domain assmall as possible.

When there is an intersection between frequency-domain resources of theuplink control channel with the long duration and frequency-domainresources of the uplink control channel with the short duration, how toarrange time-domain resources of the two and how to arrange demodulationreference signal resources of the two are also the problems to besolved.

When both an uplink control channel and an uplink data channel are sentby using beams, the following problems are also needed to be solved forthe uplink control channel: whether Multi-User Multiple-InputMultiple-Output (MU-MIMO) can be carried out by the two, and how tosolve the interference problem of the two or how to ensure thatdemodulation reference signals of the two are orthogonal to each otherwhen the MU-MIMO scheduling manner is used.

When the uplink control channel is sent by using beams, the followingproblems need to be taken into account: when a second uplink controlinformation is sent by using multiple transmitted beams, especiallymultiple time-division transmitted beams, how to arrange time-domainresources occupied by the multiple time-division transmitted beams andhow a base station arranges its own received beams according to its ownscheduling requirements so as to enable a sending end to send the uplinkcontrol channel by using suitable transmitted beams.

SUMMARY

A method for sending a control channel includes the steps as follows. Afirst communication node determines second transmission parameterinformation about the control channel according to at least one of firstcontrol information or first parameter information and sends the controlchannel to a second communication node according to the secondtransmission parameter information.

The first parameter information includes at least one of the followinginformation: demodulation reference signal information corresponding tothe first control information, demodulation reference signal informationof a data channel corresponding to the control channel, type informationof second control information transmitted on the control channel,channel coding rate information corresponding to the first controlinformation, time resource information of the data channel or the firstcontrol information, or channel state information (CSI) included in thefirst control information.

The first control information and the data channel are sent by thesecond communication node to the first communication node and the secondcontrol information is sent by the first communication node to thesecond communication node, where the second control information is onthe control channel.

A method for receiving a control channel includes: sending at least oneof first control information or first parameter information to a firstcommunication node; determining second transmission parameterinformation of the control channel according to the at least one of thefirst control information or the first parameter information; andreceiving, according to the determined second transmission parameterinformation, the control channel sent by the first communication node.

The first parameter information includes at least one of the followinginformation: demodulation reference signal information corresponding tothe first control information, demodulation reference signal informationof a data channel corresponding to the control channel, type informationof second control information transmitted on the control channel,channel coding rate information corresponding to the first controlinformation, time resource information of the data channel or the firstcontrol information, or channel state information (CSI) included in thefirst control information.

The first control information and the data channel are signals receivedby the first communication node and the second control information is asignal sent by the first communication node, where the second controlinformation is on the control channel.

A device for sending a control channel includes a receiving unit, adetermining unit and a sending unit. The receiving unit is configured toreceive at least one of first control information or first parameterinformation. The determining unit is configured to determine secondtransmission parameter information about the control channel accordingto the at least one of the first control information or the firstparameter information. The sending unit is configured to send thecontrol channel to a second communication node according to the secondtransmission parameter information.

The first parameter information includes at least one of the followinginformation: demodulation reference signal information corresponding tothe first control information, demodulation reference signal informationof a data channel corresponding to the control channel, type informationof second control information transmitted on the control channel, orchannel coding rate information corresponding to the first controlinformation.

The first control information is sent by the second communication nodeto the first communication node and the second control information issent by the first communication node to the second communication node,wherein the second control information is on the control channel.

A device for receiving a control channel includes a sending unit and areceiving unit. The sending unit is configured to send at least one offirst control information or first parameter information to a firstcommunication node. The receiving unit is configured to receive thecontrol channel sent by the first communication node according to secondtransmission parameter information. The second transmission parameterinformation is second transmission parameter information about thecontrol channel determined by the first communication node according tothe at least one of the first control information or the first parameterinformation.

The first parameter information includes at least one of the followinginformation: demodulation reference signal information corresponding tothe first control information, demodulation reference signal informationof a data channel corresponding to the control channel, type informationof second control information transmitted on the control channel, orchannel coding rate information corresponding to the first controlinformation.

The first control information is sent by the second communication nodeto the first communication node and the second control information issent by the first communication node to the second communication node,where the second control information is on the control channel.

A method for determining a sending manner of a control channel includesthe steps as follows. A first communication node determines the sendingmanner of the control channel according to a sending manner of a datachannel and sends the control channel to a second communication nodeaccording to the determined sending manner. Or, the first communicationnode determines a sending manner of a third type of control channelaccording to a sending manner of a fourth type of control channel andsends the third type of control channel to the second communication nodeaccording to the determined sending manner.

A method for determining a receiving manner of a control channelincludes the steps as follows. A second communication node receives,according to the determined receiving manner, the control channel sentby a first communication node.

The determined receiving manner is determined according to a receivingmanner used to receive a data channel sent by the first communicationnode or according to a receiving manner used to receive a fourth type ofcontrol channel sent by the first communication node.

A first determining device for determining a sending manner of a controlchannel includes: a determining unit and a sending unit. The determiningunit is configured to determine the sending manner of the controlchannel according to a sending manner of a data channel or determine asending manner of a third type of control channel according to a sendingmanner of a fourth type of control channel. The sending unit isconfigured to send the control channel to a second communication nodeaccording to the determined sending manner or send the third type ofcontrol channel to the second communication node according to thedetermined sending manner.

A second determining device for determining a receiving manner of acontrol channel includes: a receiving unit. The receiving unit isconfigured to receive, according to the determined receiving manner, thecontrol channel sent by a first communication node.

The determined receiving manner is determined according to a receivingmanner used to receive a data channel sent by the first communicationnode or according to a receiving manner used to receive a fourth type ofcontrol channel sent by the first communication node.

A computer-readable storage medium is configured to storecomputer-executable instructions for executing the preceding methods.

An electronic device includes: at least one processor; and a memory thatis communicatively connected to the at least one memory. The memorystores instructions executable by the at least one processor, and the atleast one processor executes the instructions to execute any one of thepreceding methods.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a flowchart of a method for sending a control channelaccording to an embodiment;

FIGS. 2a-2h are schematic diagrams illustrating different structures ofan uplink control channel region according to an embodiment;

FIG. 2I is a structure diagram of a downlink control channel regionaccording to an embodiment;

FIG. 3a is a schematic diagram of multiple UCCEs located on differenttime-domain symbols;

FIG. 3b is a schematic diagram of multiple UCCEs located on differentfrequency-domain positions of the same time-domain symbol;

FIG. 4a is schematic diagram one of a demodulation reference signal portof a PUCCH and a demodulation reference signal port of a PUSCH that areorthogonal to each other;

FIG. 4b is schematic diagram two of a demodulation reference signal portof a PUCCH and a demodulation reference signal port of a PUSCH that areorthogonal to each other;

FIG. 4c is schematic diagram three of a demodulation reference signalport of a PUCCH and a demodulation reference signal port of a PUSCH thatare orthogonal to each other;

FIG. 4d is schematic diagram four of a demodulation reference signalport of a PUCCH and a demodulation reference signal port of a PUSCH thatare orthogonal to each other;

FIG. 4e is schematic diagram five of a demodulation reference signalport of a PUCCH and a demodulation reference signal port of a PUSCH thatare orthogonal to each other;

FIG. 4f is a schematic diagram of time-frequency resources occupied by aPUCCH and a PUSCH;

FIG. 5a is schematic diagram one of a mapping relationship betweendownlink physical channel resources and uplink control channelresources;

FIG. 5b is an example diagram of one uplink PRB including multipleuplink control channel resource groups;

FIG. 5c is an example diagram of one uplink PRB including multipleorthogonal or non-orthogonal demodulation reference signal ports;

FIG. 5d is schematic diagram two of a mapping relationship betweendownlink physical channel resources and uplink control channelresources;

FIG. 5e is schematic diagram three of a mapping relationship betweendownlink physical channel resources and uplink control channelresources;

FIG. 5f is schematic diagram four of a mapping relationship betweendownlink physical channel resources and uplink control channelresources;

FIG. 6 is a schematic diagram of a mapping relationship between downlinkcontrol channel resources and uplink control channel resources;

FIG. 7a is schematic diagram one of an uplink control channel firstmapped in a frequency domain and then mapped in a time domain;

FIG. 7b is schematic diagram two of an uplink control channel firstmapped in a frequency domain and then mapped in a time domain;

FIG. 7c is schematic diagram three of an uplink control channel firstmapped in a frequency domain and then mapped in a time domain;

FIG. 7d is schematic diagram four of an uplink control channel firstmapped in a frequency domain and then mapped in a time domain;

FIG. 8a is schematic diagram one of multiple time-domain symbols dividedinto multiple subunits each of which has a demodulation referencesignal;

FIG. 8b is schematic diagram two of multiple time-domain symbols dividedinto multiple subunits each of which has a demodulation referencesignal;

FIG. 8c is schematic diagram three of multiple time-domain symbolsdivided into multiple subunits each of which has a demodulationreference signal;

FIG. 8d is schematic diagram four of multiple time-domain symbolsdivided into multiple subunits each of which has a demodulationreference signal;

FIG. 9 is a flowchart of a method for receiving a control channelaccording to an embodiment;

FIG. 10 is a structure diagram of a device for sending a control channelaccording to an embodiment;

FIG. 11 is a structure diagram of a device for receiving a controlchannel according to an embodiment;

FIG. 12a is example diagram one of a first mode of a demodulationreference signal according to an embodiment ten;

FIG. 12b is example diagram two of a first mode of a demodulationreference signal according to an embodiment ten;

FIG. 12c is a schematic diagram of a multiplexing manner of UCCEs andPUCCHs of terminals occupying different numbers of UCCEs according to anembodiment twelve;

FIG. 13 is flowchart one of a method for determining a sending manner ofa control channel according to an embodiment;

FIG. 14 is flowchart two of a method for determining a sending manner ofa control channel according to an embodiment;

FIG. 15 is a flowchart of a method for determining a receiving manner ofa control channel according to an embodiment;

FIG. 16 is a structure diagram of a first determining device fordetermining a sending manner of a control channel according to anembodiment;

FIG. 17 is a structure diagram of a second determining device fordetermining a receiving manner of a control channel according to anembodiment; and

FIG. 18 is a schematic diagram illustrating a hardware structure of anelectronic device according to an embodiment.

DETAILED DESCRIPTION

FIG. 1 is flowchart one of a method for sending a control channelaccording to an embodiment. As shown in FIG. 1, the method for sending acontrol channel includes the steps described below.

In step 101, a first communication node determines second transmissionparameter information about the control channel is determined accordingto at least one of first control information or first parameterinformation.

In step 102, the control channel is sent to a second communication nodeaccording to the second transmission parameter information.

The first parameter information includes at least one of the followinginformation: demodulation reference signal information corresponding tothe first control information, demodulation reference signal informationof a data channel corresponding to the control channel, type informationof second control information transmitted on the control channel, orchannel coding rate information corresponding to the first controlinformation.

Alternatively, the first control information is sent by the secondcommunication node to the first communication node and the secondcontrol information is sent by the first communication node to thesecond communication node, where the second control information is onthe control channel.

In an embodiment, the second transmission parameter information includesat least one of the following information: information about a controlchannel region, information about frequency-domain resources occupied bythe control channel, information about time-domain symbols occupied bythe control channel, information about demodulation reference signals ofthe control channel, code-domain resources occupied by the controlchannel, or a multiplexing manner of multiple pieces of second controlinformation.

In an embodiment, the first control information is first controlinformation related to the data channel corresponding to the controlchannel.

The data channel and the first control information are received by thefirst communication node from the second communication node.

In an embodiment, the demodulation reference signal information includesat least one of the following information: port index information of ademodulation reference signal; or index information of sequences adoptedby the demodulation reference signal.

In an embodiment, the method further includes: obtaining resourceinformation corresponding to the control channel according to thedemodulation reference signal information of the data channel and atleast one of the following information: frequency-domain resourcescorresponding to the data channel, index information corresponding tothe first control information, or time unit index informationcorresponding to the data channel.

In an embodiment, the method further includes: obtaining, according toone or more minimum frequency-domain resource indexes corresponding tothe data channel, a second frequency-domain resource occupied by thecontrol channel; obtaining, according to one or more maximumfrequency-domain resource indexes corresponding to the data channel, thesecond frequency-domain resource occupied by the control channel;obtaining third resource information of the control channel in thesecond frequency-domain resource according to the demodulation referencesignal information corresponding to the data channel.

In an embodiment, the third resource information includes at least oneof the following information: a time-frequency resource group index ofthe control channel in the second frequency-domain resource, where thesecond frequency-domain resource includes multiple time-frequencyresource groups; a code-domain resource index of the control channel inthe second frequency-domain resource; or demodulation reference signalresource information corresponding to the control channel.

In an embodiment, the method further includes: obtaining thirdtransmission parameter information of the control channel according tothe demodulation reference signal information corresponding to the firstcontrol information and index information corresponding to the firstcontrol information.

In an embodiment, the third transmission parameter information includesat least one of the following resource information: a time-domainresource corresponding to the control channel, the frequency-domainresource corresponding to the control channel, a code resourcecorresponding to the control channel, or a time-frequency-code resourcecorresponding to a demodulation reference signal of the control channel.

In an embodiment, the method further includes: sending another signalaccording to the information about the control channel region; or when afrequency-domain resource allocated for another signal in a current timeunit intersects with a frequency-domain resource where the controlchannel region is located, not sending the another signal on the controlchannel region; wherein the another signal includes at least one of thefollowing signals: a data channel signal, a measurement referencesignal, a demodulation reference signal, an access request signal or ascheduling request signal.

Alternatively, a resource occupied by the control channel is a subset ofa resource occupied by the control channel region. The control channelregion may also be referred to as a control channel resource set. One ofcontrol channel resources may be at least one of the followingresources: a time-domain resource, a frequency-domain resource or acode-domain resource. Besides, the resource(s) occupied by the controlchannel in the control channel region may be notified by a dynamicsignaling.

In an embodiment, the information about the control channel regionincludes at least one of the following information: a number ofsub-regions included in the control channel region, information aboutfrequency-domain resources of each of the sub-regions, or informationabout a number of time-domain symbols corresponding to each of thesub-regions.

In an embodiment, the control channel region satisfies one of thefollowing features: the control channel region occupies two sides of apredetermined bandwidth; on an upper side of the predeterminedbandwidth, the greater a number of time-domain symbols corresponding toa sub-region is, the higher an occupied frequency-domain position is,where the higher the frequency-domain position is, the greater asubcarrier number of a subcarrier at which the sub-region is located is;on a lower side of the predetermined bandwidth, the greater the numberof the symbols corresponding to the sub-region is, the lower theoccupied frequency-domain position is, where the lower thefrequency-domain position is, the smaller the subcarrier number of thesubcarrier at which the sub-region is located is; when the sub-regionincludes N time-domain symbols, an ending symbol of the N time-domainsymbols is an ending symbol of a second transmission domain; and whenthe sub-region includes the N time-domain symbols, a starting symbol ofthe N time-domain symbols is a starting time-domain symbol of the secondtransmission domain. The second transmission domain corresponds to aregion of the second communication node receiving a signal.

In an embodiment, indication information indicating information aboutthe number of time-domain symbols of the control channel in the firstcontrol information includes at least one of the following information:whether a duration of the control channel is a long duration or a shortduration; a starting symbol index of the control channel; an endingsymbol index of the control channel; the number of the time-domainsymbols of the control channel; or an index of the number of thetime-domain symbols of the control channel in an agreed set of numbersof time-domain symbols.

In an embodiment, when obtaining that a duration of the control channelis a long duration, a number of time-domain symbols of the controlchannel is equal to a number of time-domain symbols of a correspondingtransmission domain. The corresponding transmission domain and thecontrol channel have a same transmission direction.

In an embodiment, the control channels with the long duration indifferent time units correspond to different numbers of time-domainsymbols.

In an embodiment, the method further includes at least one of thefollowing: determining information about the number of time-domainsymbols occupied by the control channel or information about the numberof frequency domains of the control channel according to a type of thesecond control information transmitted on the control channel;determining the information about the number of the time-domain symbolsof the control channel or the information about the number of thefrequency domains of the control channel according to information abouta channel quality level or a capability level of the first communicationnode, where the first communication node feeds back the capability levelinformation or the channel quality level information to the secondcommunication node; determining the information about the number of thetime-domain symbols occupied by the control channel or the informationabout the number of the frequency domains of the control channelaccording to a channel coding rate corresponding to the first controlinformation; determining the information about the number of thetime-domain symbols occupied by the control channel or the informationabout the number of the frequency domains of the control channelaccording to a channel coding rate of a first data channel correspondingto the second control information; or determining the information aboutthe number of the time-domain symbols occupied by the control channel orthe information about the number of the frequency domains of the controlchannel according to a channel coding rate of a second data channel.

Different types of the control channel are distinguished from each otherby at least one of the following information: whether the second controlinformation is Channel State Information (CSI) orAcknowledgement/Negative-Acknowledgement (ACK/NACK) information, aninformation length of the second control information, the first datachannel being a data channel sent by the second communication node tothe first communication node, the second data channel being a datachannel sent by the first communication node to the second communicationnode in a current time unit, or the current time unit being a time unitwhere the control channel is located.

In an embodiment, multiple pieces of second control information havingthe same number of time-domain symbols are sent on one control channel.In an embodiment, multiple pieces of second control information of thesame type are sent on one control channel. Different types of secondcontrol information are distinguished from each other by at least one ofthe following information: whether the second control information is CSIinformation or ACK/NACK information, an information length of the secondcontrol information, or a service type of the data corresponding to thesecond control information. The multiple pieces of second controlinformation are multiple pieces of second control information needed tobe fed back in the current time unit.

In an embodiment, the method further includes at least one of thefollowing. When multiple pieces of second control information needed tobe fed back in a current time unit are sent on one control channel,obtaining resource information of the control channel according to firstcontrol information corresponding to a highest time unit index amongmultiple pieces of first control information related to the multiplepieces of second control information. For example, the highest time unitindex of the time unit represents the last time unit. When the multiplepieces of second control information needed to be fed back in thecurrent time unit are sent on the one control channel, obtaining theresource information of the control channel according to control channelresource information corresponding to the multiple pieces of secondcontrol information.

In an embodiment, a time-frequency-domain position of a demodulationreference signal of the control channel is obtained in one of thefollowing manners: whether the demodulation reference signal is on astarting symbol or an ending symbol of the control channel is obtainedaccording to the first control information; whether frequency-domainresources occupied by the demodulation reference signal in onetime-domain symbol are continuous or discrete is obtained according tothe first control information; parameters related to the demodulationreference signal are determined according to information about thenumber of time-domain symbols of the control channel; the parametersrelated to the demodulation reference signal are determined according towhether the control channel and a second data channel are allowed to bein code division multiplexing mode; the parameters related to thedemodulation reference signal are determined according to the number ofsending manner sets; and the parameters related to the demodulationreference signal are determined according to a sending mode of thecontrol channel, where the sending mode includes a single-layertransmission, a transmission diversity mode and a repeated transmission.The second data channel is a data channel sent by the firstcommunication node to the second communication node or by a thirdcommunication node to the second communication node.

In an embodiment, the first control information satisfies at least oneof the following features: the first control information is high-layersemi-static control information; or the first control information isphysical-layer dynamic control information.

In an embodiment, frequency-domain resource information of the controlchannel is obtained in the following manner: physical-layer dynamicinformation to notify the frequency-domain resource.

In an embodiment, the frequency domain resource may occupy any one ormore frequency-domain resources within a predetermined bandwidth. In anexemplary embodiment, one frequency-domain resource is one PRB, onesub-band, one control channel element (CCE) or one resource elementgroup (REG).

In an embodiment, resources occupied by the control channel satisfy thefollowing feature: obtaining an ending time-domain symbol position and astarting frequency-domain resource corresponding to the control channel,as well as information about a number of resource elements of thecontrol channel; and for the multiple resource elements of the controlchannel, first mapping in a frequency domain and then mapping in a timedomain.

In an embodiment, the first parameter information further includes indexinformation of a time unit at which the data channel or the firstcontrol information is located.

In an embodiment, time resource information of one of the data channeland the first control information includes at least one of the followinginformation: index information of a time unit at which the data channelor the first control information is located; index information of atime-domain symbol at which the data channel or the first controlinformation is located; index information of a time unit at which atime-domain ending position of one of the data channel or the firstcontrol information is located; or index information of a time-domainsymbol at which the time-domain ending position of one of the datachannel or the first control information is located.

In an embodiment, demodulation reference signal resource information ofthe second control information is determined according to the CSI in thefirst control information.

In an embodiment, CSI information fed back by the first communicationnode includes a transmission resource corresponding to the firstcommunication node. The transmission resource includes one or more ofthe following types of resources: a transmitting beam resource, atransmission port resource, a transmission precoding matrix resource, atransmission time resource, a transmission frequency-domain resource anda transmission sequence resource.

In an embodiment, the first control information satisfies at least oneof the following: the first control information is common controlinformation, where the common control information may be a group commonphysical downlink control channel; the first control informationincludes information that notifies a control channel resource set of acurrent time unit; the first control information includes informationthat notifies a sending sequence of multiple sending manners used by thefirst communication node to send the control channel; the first controlinformation includes information that notifies a correspondence betweentime-domain regions of the control channel and the multiple sendingmanners or sending manner sets used to send the control channel; thefirst control information includes at least one of information fornotifying time-domain resource corresponding to each sending manner inthe multiple sending manners or information for notifyingfrequency-domain resource corresponding to each sending manner in themultiple sending manners, wherein the multiple sending manners are usedby the first communication node to send the control channel; the firstcontrol information includes at least one of information for notifyingtime-domain resource corresponding to each sending manner set in themultiple sending manner sets or information for notifyingfrequency-domain resource corresponding to each sending manner set inthe multiple sending manner sets, wherein the multiple sending mannersets are used by the first communication node to send the controlchannel; the first control information includes information thatnotifies a sending manner used by the first communication node to sendthe control channel, where information about the sending manners mayalso be referred to as beam information or precoding information; thefirst control information includes information that notifies a controlchannel format used by the first communication node to send the controlchannel, where different control channels are distinguished from eachother in at least one of the following manners: a frequency-domainspreading manner, a time-domain spreading manner, the maximum number ofbits that can be transmitted, or a multiplexing manner of multiplepieces of second control information; the first control informationincludes information that notifies a modulation manner used by the firstcommunication node to send the control channel; or the first controlinformation includes information that notifies a coding rate used by thefirst communication node to send the control channel.

In an embodiment, the method further includes: randomly selecting, bythe first communication node, one or more control channel resources fromthe control channel resource set and sending the control channel on theone or more control channel resources; or selecting, by the firstcommunication node, one or more control channel resources from thecontrol channel resource set according to a predetermined rule andsending the control channel on the one or more control channelresources. The predetermined rule is identification information of thefirst communication node.

In an embodiment, the sending manners are indicated by at least one ofthe following information: information about a port set of a firstreference signal, where when a first reference signal port set includesonly one reference signal port, port information of the first referencesignal is directly notified; information about a resource index of thefirst reference signal;

time-domain information corresponding to the first reference signal;frequency-domain information corresponding to the first referencesignal; sequence information corresponding to the first referencesignal; information about a transmitting beam logical number;information about a precoding codeword or codeword set; a or ndinformation about a quasi-co-location relationship between thedemodulation reference signal of the control channel and a secondreference signal port.

The second reference signal port may also be at least one of a secondreference signal port set or a second reference signal resource. Thequasi-co-location relationship can be interpreted as: if two referencesignals satisfy the quasi-co-location relationship, the channelcharacteristic parameters of one reference signal may be obtained fromthe channel characteristic parameters of the two reference signals. Thechannel characteristic parameters include at least one of the followingparameters: delay spread, Doppler spread, Doppler shift, average delay,average gain, average vertical transmission angle, average horizontaltransmission angle, average vertical angle of arrival, averagehorizontal angle of arrival, central vertical transmission angle,central horizontal transmission angle, central vertical angle ofarrival, or central horizontal angle of arrival.

The first reference signal and the second reference signal are referencesignals sent by the first communication node, the first reference signaland the second reference signal are reference signals received by thefirst communication node, or the first reference signal and the secondreference signal are reference signals sent and received by the firstcommunication node.

In an embodiment, when the first reference signal and the secondreference signal are the reference signals received by the firstcommunication node, at least one of the first reference signal and thesecond reference signal indicates one of the following information:information about a sending manner used by the first communication nodeto send a signal; the information about the sending manner used by thefirst communication node to send the signal and information about areceiving manner used by a receiving end to receive the signal; theinformation about the receiving manner used by the receiving end toreceive the signal after the first communication node sends the signal;or the information about the sending manner used by the firstcommunication node to send the signal and information about a receivingmanner used by the first communication node to receive the signal.

FIG. 9 is flowchart two of a method for receiving a control channelaccording to an embodiment. As shown in FIG. 9, the method for receivinga control channel includes the steps described below.

In step 901, a second communication node sends at least one of firstcontrol information or first parameter information to a firstcommunication node.

In step 902, the second communication node receives the control channelsent by the first communication node according to second transmissionparameter information. The second transmission parameter information isthe second transmission parameter information for determining thecontrol channel by the first communication node according to at leastone of the first control information or the first parameter information.

The first parameter information includes at least one of the followinginformation: demodulation reference signal information corresponding tothe first control information, demodulation reference signal informationof a data channel corresponding to the control channel, type informationof second control information transmitted on the control channel, orchannel coding rate information corresponding to the first controlinformation.

Alternatively, the first control information is sent by the secondcommunication node to the first communication node and the secondcontrol information is sent by the first communication node to thesecond communication node, where the second control information is onthe control channel.

In an embodiment, the second transmission parameter information includesat least one of the following information: information about a controlchannel region, information about frequency-domain resources occupied bythe control channel, information about time-domain symbols occupied bythe control channel, information about demodulation reference signals ofthe control channel, information about code-domain resources occupied bythe control channel, or a multiplexing manner of multiple pieces ofsecond control information.

In an embodiment, the first control information is the first controlinformation related to the data channel corresponding to the controlchannel.

Alternatively, the data channel and the first control information arereceived by the first communication node from the second communicationnode.

In an embodiment, the demodulation reference signal information includesat least one of the following information: port index information of ademodulation reference signal; or index information of sequences adoptedby the demodulation reference signal.

In an embodiment, the method further includes: obtaining resourceinformation of the control channel according to the demodulationreference signal information of the data channel and at least one of thefollowing information: frequency-domain resources corresponding to thedata channel, index information corresponding to the first controlinformation, or time unit index information corresponding to the datachannel.

In an embodiment, the method further includes: obtaining, according toone or more minimum frequency-domain resource indexes corresponding tothe data channel, a second frequency-domain resource occupied by thecontrol channel; obtaining, according to one or more maximumfrequency-domain resource indexes corresponding to the data channel, thesecond frequency-domain resource occupied by the control channel;obtaining third resource information of the control channel in thesecond frequency-domain resource according to the demodulation referencesignal information corresponding to the data channel.

In an embodiment, the third resource information includes at least oneof the following information: a time-frequency resource group index ofthe control channel in the second frequency-domain resource, wherein thesecond frequency-domain resource includes multiple time-frequencyresource groups; a code-domain resource index of the control channel inthe second frequency-domain resource; or demodulation reference signalresource information corresponding to the control channel.

In an embodiment, the method further includes: obtaining thirdtransmission parameter information of the control channel according tothe demodulation reference signal information corresponding to the firstcontrol information and index information corresponding to the firstcontrol information.

In an embodiment, the third transmission parameter information includesat least one of the following resource information: a time-domainresource corresponding to the control channel, the frequency-domainresource corresponding to the control channel, a code resourcecorresponding to the control channel, or a time-frequency-code resourcecorresponding to a demodulation reference signal of the control channel.

In an embodiment, the method further includes: receiving another signalaccording to the information about the control channel region; or when afrequency-domain resource allocated for another signal in a current timeunit intersects with a frequency-domain resource where the controlchannel region is located, not receiving the another signal on thecontrol channel region; wherein the another signal includes at least oneof the following signals: a data channel signal, a measurement referencesignal, a demodulation reference signal, an access request signal and ascheduling request signal; or a resource occupied by the control channelbeing a subset of resources occupied by the control channel region,where the control channel region may also be referred to as a controlchannel resource set. One control channel resource may be at least oneof the following resources: a time-domain resource, a frequency-domainresource or a code-domain resource. The resources occupied by thecontrol channel in the control channel region may be notified by adynamic signaling.

In an embodiment, the information about the control channel regionincludes at least one of the following information: the number ofsub-regions included in the control channel region, information aboutfrequency-domain resources of each of the sub-regions, or informationabout the number of time-domain symbols corresponding to each of thesub-regions.

In an embodiment, the control channel region satisfies one of thefollowing features: the control channel region occupies two sides of apredetermined bandwidth; on an upper side of the predeterminedbandwidth, the greater a number of time-domain symbols corresponding toa sub-region is, the higher an occupied frequency-domain position is,wherein the higher the frequency-domain position is, the greater anumber of a subcarrier at which the sub-region is located is; on a lowerside of the predetermined bandwidth, the greater the number of thesymbols corresponding to the sub-region is, the lower the occupiedfrequency-domain position is, wherein the lower the frequency-domainposition is, the smaller a number of a subcarrier at which thesub-region is located is; when the sub-region includes N time-domainsymbols, an ending symbol of the N time-domain symbols is an endingsymbol of a second transmission domain; and when the sub-region includesthe N time-domain symbols, a starting symbol of the N time-domainsymbols is a starting time-domain symbol of the second transmissiondomain. The second transmission domain corresponds to a signal receivingregion of the second communication node.

In an embodiment, indication information which is in the first controlinformation and indicates information about a number of time-domainsymbols of the control channel includes at least one of the followinginformation: whether a duration of the control channel is a longduration or a short duration; a starting symbol index of the controlchannel; an ending symbol index of the control channel; the number ofthe time-domain symbols of the control channel; or an index of thenumber of the time-domain symbols of the control channel in an agreedset of numbers of time-domain symbols.

In an embodiment, when obtaining that a duration of the control channelis a long duration, a number of time-domain symbols of the controlchannel is equal to a number of time-domain symbols of a correspondingtransmission domain, wherein the corresponding transmission domain andthe control channel have a same transmission direction.

In an embodiment, the control channels with the long duration indifferent time units correspond to different numbers of time-domainsymbols.

In an embodiment, the method further includes at least one of thefollowing: determining information about a number of time-domain symbolsoccupied by the control channel or information about a number offrequency domains of the control channel according to a type of thesecond control information transmitted on the control channel;determining the information about the number of the time-domain symbolsof the control channel or the information about the number of thefrequency domains of the control channel according to information abouta channel quality level or a capability level fed back by the firstcommunication node, where the first communication node feeds back thecapability level information or the channel quality level information tothe second communication node; determining the information about thenumber of the time-domain symbols occupied by the control channel or theinformation about the number of the frequency domains of the controlchannel according to a channel coding rate corresponding to the firstcontrol information; determining the information about the number of thetime-domain symbols occupied by the control channel or the informationabout the number of the frequency domains of the control channelaccording to a channel coding rate of a first data channel correspondingto the second control information; or determining the information aboutthe number of the time-domain symbols occupied by the control channel orthe information about the number of the frequency domains of the controlchannel according to a channel coding rate of a second data channel.

Different types of the control channel are distinguished from each otherby at least one of the following information: whether the second controlinformation is CSI information or ACK/NACK information, an informationlength of the second control information, the first data channel beingsent by the second communication node to the first communication node,the second data channel being a data channel sent by the firstcommunication node to the second communication node in a current timeunit, or the current time unit being a time unit where the controlchannel is located.

In an embodiment, multiple pieces of second control information havingthe same number of time-domain symbols are received on one controlchannel; and multiple pieces of second control information of the sametype are received on one control channel.

The different types of second control information are distinguished fromeach other by at least one of the following information: whether thesecond control information is CSI information or ACK/NACK information,an information length of the second control information, or a servicetype of the data corresponding to the second control information. Themultiple pieces of second control information are the multiple pieces ofsecond control information needed to be received in a current time unit.

In an embodiment, the method further includes at least one of thefollowing: when multiple pieces of second control information needed tobe received in a current time unit are sent on one control channel,obtaining resource information of the control channel according to firstcontrol information corresponding to a highest time unit index amongmultiple pieces of first control information related to the multiplepieces of second control information; or when the multiple pieces ofsecond control information needed to be received in the current timeunit are sent on the one control channel, obtaining the resourceinformation of the control channel according to control channel resourceinformation corresponding to the multiple pieces of second controlinformation.

In an embodiment, a time-frequency-domain position of a demodulationreference signal of the control channel is obtained in one of thefollowing manners: whether the demodulation reference signal is on astarting symbol or an ending symbol of the control channel is obtainedaccording to the first control information; whether frequency-domainresources occupied by the demodulation reference signal in onetime-domain symbol are continuous or discrete is indicated according tothe first control information; parameters related to the demodulationreference signal are determined according to information about a numberof time-domain symbols of the control channel; the parameters related tothe demodulation reference signal are determined according to whetherthe control channel and a second data channel are allowed to be in codedivision multiplexing mode; the parameters related to the demodulationreference signal are determined according to a number of sending mannersets; and the parameters related to the demodulation reference signalare determined according to a sending mode of the control channel, wherethe sending mode includes a single-layer transmission, a transmissiondiversity mode and a repeated transmission.

The second data channel is a data channel sent by the firstcommunication node to the second communication node or by a thirdcommunication node to the second communication node.

In an embodiment, the first control information satisfies at least oneof the following features: the first control information is high-layersemi-static control information; or the first control information isphysical-layer dynamic control information.

In an embodiment, frequency-domain resource information of the controlchannel is obtained in the following manner: physical-layer dynamicinformation to notify the frequency-domain resource.

Alternatively, the frequency domain resource may occupy any one or morefrequency-domain resources within a predetermined bandwidth. In anexemplary embodiment, one frequency-domain resource is one PRB, onesub-band, one CCE or one REG

In an embodiment, a resource occupied by the control channel satisfiesthe following feature: obtaining an ending time-domain symbol positionand a starting frequency-domain resource corresponding to the controlchannel, as well as information about a number of resource elements ofthe control channel; and for the multiple resource elements of thecontrol channel, first mapping in a frequency domain and then mapping ina time domain.

In an embodiment, the first parameter information further includes indexinformation of a time unit at which the data channel or the firstcontrol information is located.

In an embodiment, time resource information of one of the data channeland the first control information includes at least one of the followinginformation: index information of a time unit at which the data channelor the first control information is located; index information of atime-domain symbol at which the data channel or the first controlinformation is located; index information of a time unit at which atime-domain ending position of one of the data channel or the firstcontrol information is located; or index information of a time-domainsymbol at which the time-domain ending position of one of the datachannel or the first control information is located.

In an embodiment, demodulation reference signal resource information ofthe second control information is determined according to CSIinformation in the first control information.

In an embodiment, CSI information fed back by the first communicationnode includes a transmission resource corresponding to the firstcommunication node. The transmission resource includes one or more ofthe following types of resources: a transmitting beam resource, atransmission port resource, a transmission precoding matrix resource, atransmission time resource, a transmission frequency-domain resource anda transmission sequence resource.

In an embodiment, the first control information satisfies that at leastone of the followings. The first control information is common controlinformation, where the common control information may be a group commonphysical downlink control channel. The first control informationincludes information that notifies a control channel resource set of acurrent time unit. The first control information includes informationthat notifies a sending sequence of multiple sending manners used by thefirst communication node to send the control channel. The first controlinformation includes information that notifies a correspondence betweentime-domain regions of the control channel and the multiple sendingmanners or sending manner sets used to send the control channel. Thefirst control information includes at least one of information fornotifying time-domain resource corresponding to each sending manner inthe multiple sending manners or information for notifyingfrequency-domain resource corresponding to each sending manner in themultiple sending manners, wherein the multiple sending manners are usedby the first communication node to send the control channel; the firstcontrol information includes at least one of information for notifyingtime-domain resource corresponding to each sending manner set in themultiple sending manner sets or information for notifyingfrequency-domain resource corresponding to each sending manner set inthe multiple sending manner sets, wherein the multiple sending mannersets are used by the first communication node to send the controlchannel. The first control information includes information thatnotifies a sending manner used by the first communication node to sendthe control channel, where information about the sending manners mayalso be referred to as beam information or precoding information. Thefirst control information includes information that notifies a controlchannel format used by the first communication node to send the controlchannel, where different control channels are distinguished from eachother in at least one of the following manners: a frequency-domainspreading manner, a time-domain spreading manner, information about themaximum number of bits that can be transmitted, or a multiplexing mannerof multiple pieces of second control information. The first controlinformation includes information that notifies a modulation manner usedby the first communication node to send the control channel. The firstcontrol information includes information that notifies a coding rateused by the first communication node to send the control channel.

In an embodiment, the method further includes: detecting, on allresource sets of the control channel resource set, the control channelsent by the first communication node; and detecting, on a subset of thecontrol channel resource set according to a predetermined rule, thecontrol channel sent by the first communication node. The predeterminedrule is identification information of the first communication node.

In an embodiment, the sending manners are indicated by at least one ofthe following information: information about a port set of a firstreference signal, where port information of the first reference signalis directly notified when a first reference signal port set includesonly one reference signal port; information about a resource index ofthe first reference signal; time-domain information corresponding to thefirst reference signal; frequency-domain information corresponding tothe first reference signal; sequence information corresponding to thefirst reference signal; information about a transmitting beam logicalnumber; information about a precoding codeword or codeword set; orinformation about a quasi-co-location relationship between thedemodulation reference signal of the control channel and a secondreference signal port. The second reference signal port may also be atleast one of a second reference signal port set or a second referencesignal resource.

The quasi-co-location relationship can be interpreted as: if tworeference signals satisfy the quasi-co-location relationship, thechannel characteristic parameters of one reference signal can beobtained from the channel characteristic parameters of the two referencesignals. The channel characteristic parameters include at least one ofthe following parameters: delay spread, Doppler spread, Doppler shift,average delay, average gain, average vertical transmission angle,average horizontal transmission angle, average vertical angle ofarrival, average horizontal angle of arrival, central verticaltransmission angle, central horizontal transmission angle, centralvertical angle of arrival, or central horizontal angle of arrival.

The first reference signal and the second reference signal are referencesignals sent by the first communication node, the first reference signaland the second reference signal are reference signals received by thefirst communication node, or the first reference signal and the secondreference signal are reference signals sent and received by the firstcommunication node.

In an embodiment, when the first reference signal and the secondreference signal are the reference signals received by the firstcommunication node, at least one of the first reference signal and thesecond reference signal indicates one of the following information:information about a sending manner used by the first communication nodeto send a signal; the information about the sending manner used by thefirst communication node to send the signal and information about areceiving manner used by a receiving end to receive the signal; theinformation about the receiving manner used by the receiving end toreceive the signal after the first communication node sends the signal;or the information about the sending manner used by the firstcommunication node to send the signal and information about a receivingmanner used by the first communication node to receive the signal.

Embodiment One

In this embodiment, a notification manner of uplink control channelregion information is described. On the one hand, the uplink controlchannel region information is for resource mapping of an uplink controlchannel, and the uplink control channel is in the uplink control channelregion. On the other hand, the uplink control channel region informationmay also serve as information about rate matching of other uplinksignals. For example, when frequency-domain resources allocated to otheruplink signals in a current time unit intersect frequency-domainresources where the uplink control channel region is located, the otheruplink signals are not sent on the uplink control channel region. Theother uplink signals include at least one of the following signals: anuplink data channel signal, an uplink measurement reference signal, anuplink demodulation reference signal, an uplink access request signal,or an uplink scheduling request signal.

The uplink control channel region information includes at least one ofthe following information: information about the number of sub-regionsincluded in the uplink control channel region, information aboutfrequency-domain resources of each sub-region, or information about thenumber of time-domain symbols corresponding to each sub-region. Theinformation about frequency-domain resources of the sub-region includesa minimum resource index of frequency-domain resources where thesub-region is located, or an offset, where the offset is an offset froman upper side of a predetermined bandwidth, or may also be an offsetfrom an upper sub-region. Alternatively, the information aboutfrequency-domain resources of the sub-region includes a maximum resourceindex of frequency-domain resources where the sub-region is located, oran offset, where the offset is an offset from a lower side of apredetermined bandwidth, or may also be an offset from a lowersub-region. The predetermined bandwidth is from bottom to top in adirection from a small subcarrier number to a large subcarrier number.

The first notification manner of the information about the number oftime-domain symbols corresponding to each sub-region is to notify longduration information or short duration information and then to obtainthe number of time-domain symbols according to an agreed value or anagreed rule. For example, the number of time-domain symbolscorresponding to the long duration and the number of time-domain symbolscorresponding to the short duration are fixed, or the number oftime-domain symbols of the long duration is the number of time-domainsymbols of the uplink transmission domain included in the current timeunit. The number of time-domain symbols of the uplink transmissiondomain may be different corresponding to different time units, so thatthe numbers of time-domain symbols corresponding to the long durationare different in different time units. The second notification manner ofthe information about the number of time-domain symbols corresponding toeach sub-region is to notify only the long duration and not notify thenumber of time-domain symbols for a long-duration sub-region, and tonotify information about the number of time-domain symbols for ashort-duration sub-region. The third notification manner of theinformation about the number of time-domain symbols corresponding toeach sub-region is to notify a starting time-domain symbol indexcorresponding to the sub-region, where the ending symbol is an endingsymbol of the uplink transmission domain by default. The fourthnotification manner of the information about the number of time-domainsymbols corresponding to each sub-region is to notify an endingtime-domain symbol index corresponding to the sub-region, where astarting symbol is a starting symbol of the uplink transmission domainby default. The fifth notification manner of the information about thenumber of time-domain symbols corresponding to each sub-region is tonotify the starting time-domain symbol index and the number oftime-domain symbols corresponding to the sub-region. The sixthnotification manner of the information about the number of time-domainsymbols corresponding to each sub-region is to notify the endingtime-domain symbol index and the number of time-domain symbolscorresponding to the sub-region. In an exemplary embodiment, first alength set is configured fixedly or by a high layer, and then an elementindex of a length in the length set is notified.

The uplink control channel region satisfies one of the followingfeatures: the uplink control channel region occupies two sides of thepredetermined bandwidth; on the upper side of the predeterminedbandwidth, the greater the number of symbols corresponding to asub-region is, the higher an occupied frequency-domain position is,where a higher frequency-domain position indicates a greater number ofthe located subcarrier; on the lower side of the predeterminedbandwidth, the greater the number of the symbols corresponding to thesub-region is, the lower the occupied frequency-domain position is,where a higher frequency-domain position indicates a greater number ofthe located subcarrier; when the sub-region includes N time-domainsymbols, an ending symbol of the N time-domain symbols is an endingsymbol of an uplink transmission domain; and when the sub-regionincludes the N time-domain symbols, a starting symbol of the Ntime-domain symbols is a starting time-domain symbol of the uplinktransmission domain. Here, the predetermined bandwidth may be a systembandwidth, and it is needed to confirm whether the center carrierfrequency of a narrowband user can be freely changed.

Referring to FIGS. 2a to 2g , FIG. 2a shows that the uplink controlchannel region is symmetrically located on both sides of thepredetermined bandwidth, the uplink control sub-regions are located atthe end of the uplink transmission domain, and the sub-regions in theuplink control channel region are arranged in the order of the number oftime-domain symbols. FIG. 2b shows that the uplink control channelregion is symmetrically located on both sides of the predeterminedbandwidth, and the sub-regions of the uplink control channel are locatedat the beginning positions of the uplink transmission domain. FIG. 2cshows that the sub-regions of the uplink control channel are located onthe upper side, and the uplink control sub-regions are located at theend of the uplink transmission domain. FIG. 2d shows that thesub-regions of the uplink control channel are located on the lower side,and the uplink control sub-regions are located at the end of the uplinktransmission domain. FIG. 2e shows that the sub-regions of the uplinkcontrol channel are on the upper side, and the uplink controlsub-regions are located at the beginning of the uplink transmissiondomain. FIG. 2f shows that the sub-regions of the uplink control channelare located on the lower side, and the uplink control sub-regions arelocated at the beginning of the uplink transmission domain. FIG. 2gshows that the sub-regions of the uplink control channel are located inthe middle.

In the preceding FIGS. 2a to 2b , one uplink control channel maysymmetrically occupy frequency-domain resources on the upper and lowersides, or one uplink control channel may also occupy only the upper sideor the lower side. In an exemplary embodiment, when one control channeloccupies two side of the uplink control region, the uplink controlchannel region may also be asymmetric on the upper and lower sides. Asshown in FIG. 2h , on the upper side, the number of time-domain symbolsoccupied by the uplink control channel region is {14, 7, 2, 1}, and onthe lower side, the number of occupied time-domain symbols is {1, 2,14}. In the embodiment, the number of sub-regions included in the uplinkcontrol channel, the number of time-domain symbols in each sub-region,and the frequency-domain resources are merely examples.

In this embodiment, the predetermined system bandwidth may be the systembandwidth allocated to the terminal.

The first notification manner of the uplink control channel regioninformation is to notify the information by a semi-static high-layersignaling. The second notification manner of the uplink control channelregion information is to semi-statically notify multiple sets of controlchannel region information, and then to notify, by using aphysical-layer dynamic signaling, which of the multiple sets the uplinkcontrol channel region information of the current time unit may be. Thephysical-layer dynamic signaling may be a dedicated control signaling ora dynamic common control signaling. The third notification manner of theuplink control channel region information is to semi-statically notifythe information, and then to notify, by using a dynamic signaling, anuplink control channel region outside the uplink control channel regionof the semi-static signaling.

The preceding manner may also be used for a downlink control channel.The base station configures downlink control channel region informationby a semi-static signaling or a dynamic signaling, so that the terminalmay perform a blind detection of control signaling in the controlchannel region or perform rate matching of a PDSCH region according tothe downlink control channel region information. In an exemplaryembodiment, the downlink control domain is located in the first fewsymbols of the downlink transmission domain, and the occupiedfrequency-domain bandwidth is sequentially decreased from the beginningto the end. As shown in FIG. 2I, in an exemplary embodiment, onedownlink control channel may occupy resources in multiple sub-regionswhile, in the transmission of the uplink control channel, one uplinkcontrol channel may occupy resources in only one sub-region.

In the embodiment, the uplink control channel region may be referred toas an uplink control resource set in which one control channel resourcemay be at least one of the following resources: a time-domain resource,a frequency-domain resource or a code-domain resource. The resource(s)occupied by the control channel in the control channel region may benotified by a dynamic signaling.

When the uplink control channel region information is for resourcemapping of the uplink control channel, in an exemplary embodiment, theuplink control channel region information is notified in a high-layersignaling, and the dynamic signaling is used to indicate the resourcesoccupied by the uplink control channel in the uplink control channelregion.

Resources occupied by an uplink control channel belong to one region ofthe uplink control channel. In this case, the uplink control channel andthe region occupy the same number of time-domain symbols, or thetime-domain symbols of the uplink control channel are a subset of thetime-domain symbols occupied by the region. Similarly, the uplinkcontrol channel and the region occupy the same frequency-domainresources, or the frequency-domain resources of the uplink controlchannel are a subset of the frequency-domain resources occupied by theregion.

Embodiment Two

In the embodiment, one of the followings is determined according to thetype of the uplink control information transmitted on the uplink controlchannel: the number of time-domain symbols of the uplink controlchannel, or the number of frequency-domain resources, or the number ofuplink control resources (UCCE). One UCCE is the smallest resourceelement for mapping uplink control information. Different uplink controlchannel types are distinguished from each other by at least one of thefollowing information: whether the uplink control information is CSIinformation or ACK/NACK information, or the information length of theuplink control information. The information length of the uplink controlinformation may be a bit length before channel coding of the uplinkcontrol information, or may be the number of symbols after modulatingthe uplink control information. Here, the information length is thenumber of bits after channel coding, or the number of modulationsymbols, or the number of bits before channel coding.

It can be assumed that the minimum resource mapping unit of the uplinkcontrol channel is a UCCE (such as one PRB resource on one time-domainsymbol or one PRB resource on one OFDM symbol with a reference of 15 kHzsubcarrier interval). The base station and the terminal agree: X UCCEscorresponding to one uplink control channel when the uplink controlinformation is ACK/NACK, and Y UCCEs corresponding to one uplink controlchannel when the uplink control information is CSI (where the CSIinformation includes information about channel measurement). X and Y arenatural numbers. In an exemplary embodiment, X and Y are two differentnatural numbers, where X and Y may be agreed values.

The number of time-domain symbols or the number of frequency-domainresources of the uplink control channel may be determined according tothe information length of the uplink control information. For example,it is agreed that in one UCCE Ln modulation symbols may be transmittedand LN modulation symbols need to be transmitted on one control channel,then the number of UCCEs required by the control channel is ┌LN/Ln┐.

It can be agreed that Ln modulation symbols that may be transmitted onone UCCE for the ACK/NACK information are different from Ln modulationsymbols that may be transmitted on one UCCE for the CSI information. Inan exemplary embodiment, the number Ln corresponding to the ACK/NACKinformation is less than or equal to the number Ln corresponding to theCSI information.

In the embodiment, multiple UCCEs may be composed of multiplefrequency-domain units located in the same time-domain OFDM symbol. FIG.3b is an example diagram of three UCCEs in three frequency-domainresources. The multiple UCCEs may also be composed of multipletime-domain symbols located in the same frequency-domain resource. FIG.3a is an example diagram of three UCCEs in three time-domain symbols.The multiple UCCEs required by the control channel may also be obtainedaccording to other rules, such as a frequency hopping rule.

In the embodiment, the number of time-domain symbols or the number offrequency-domain resources of the uplink control channel may bedetermined according to a capability level. For example, the greater thelevel of the maximum power corresponding to the terminal is, the smallerthe number of time-domain symbols is, or the greater the level of themaximum power corresponding to the terminal is, the smaller the numberof frequency-domain resources is. The greater the power level is, thegreater the maximum power is.

In the embodiment, the number of time-domain symbols or the number offrequency-domain resources of the uplink control channel may bedetermined according to a channel quality level. The better the channelquality is, the smaller the number of corresponding time-domain symbolsis, or the better the channel quality is, the smaller the number ofcorresponding frequency-domain resources is.

The first obtaining manner of the channel quality is to obtain thechannel quality according to path loss information. For example, thecorresponding path loss information is obtained according to thedownlink measurement reference signal, and the downlink channel qualityis obtained according to the path loss information. The smaller the pathloss is, the better the channel quality is. And then, the smaller thenumber of time-domain symbols corresponding to the uplink controlchannel is, or the smaller the number of frequency-domain resourcescorresponding to the uplink control channel is, or the smaller thenumber of time-domain symbols corresponding to the uplink controlchannel and the smaller the number of frequency-domain resources are.

The second obtaining manner of the channel quality is to obtain thechannel quality according to a channel quality indicator (CQI) of thedownlink channel fed back by the terminal to the base station. Thebetter the CQI quality is, the better the corresponding channel qualityis. And then, the smaller the number of time-domain symbolscorresponding to the uplink control channel is, or the smaller thenumber of frequency-domain resources corresponding to the uplink controlchannel is, or the smaller the number of time-domain symbolscorresponding to the uplink control channel and the smaller the numberof frequency-domain resources are.

The third obtaining manner of the channel quality is to obtain thechannel quality according to the channel coding rate of the seconddownlink control information corresponding to the downlink datacorresponding to the second uplink control information. For example, thesecond uplink control information is ACK/NACK information andcorresponds to an acknowledgment response of a physical downlink sharedchannel (PDSCH) of a downlink data channel, and the PDSCH hascorresponding DCI information (second downlink control information). Thelower the channel coding rate of the Downlink Control Information (DCI)is, the worse the channel quality is, and then the greater the number oftime-domain symbols corresponding to the uplink control channel is orthe greater the number of frequency-domain resources corresponding tothe uplink control channel is or the greater the number of time-domainsymbols corresponding to the uplink control channel and the greater thenumber of the frequency-domain resources are. Alternatively, the channelquality is determined according to a Modulation and Coding Scheme (MCS)of the allocated PDSCH.

The fourth obtaining manner of the channel quality is to send thechannel quality by the base station to the terminal. For example, thebase station obtains the uplink channel quality by measuring the uplinkmeasurement reference signal and feeds the uplink channel quality backto the terminal.

Embodiment Three

In the embodiment, the uplink control channel and the uplink datachannel may be transmitted by MU-MIMO, so that frequency-domainfragments caused by the uplink control channel with a short duration maybe effectively used.

A demodulation reference signal of the uplink data channel and ademodulation reference signal of the uplink control channel may belocated on the same time-domain symbol set, or a time-domain symbolposition of the demodulation reference signal of the uplink data channelis located in a time-domain symbol set occupied by the uplink controlchannel, or a port set of the demodulation reference signal of theuplink data channel intersects a port set of the demodulation referencesignal of the uplink control channel, or the uplink data information isnot transmitted on the time-frequency resources occupied by thedemodulation reference signal of the uplink control channel. Therefore,the transmission in the MU-MIMO mode may use the fragments effectivelybetween the uplink control channel and the uplink data channel.

As shown in FIGS. 4a to 4e , the DMRS ports of the above uplink controlchannel (physical uplink control channel (PUCCH)) and the uplink datachannel (physical uplink shared channel (PUSCH)) are orthogonal. In FIG.4a , the PUSCH cannot be used to send signals on time-frequencyresources occupied by a port 1 but can be used to send signals onPUCCH-occupied resources excluding the demodulation reference signal(i.e., port 1 in the figure). In FIG. 4b , the PUCCH cannot be used totransmit information on resources occupied by the port 1, and the PUSCHcannot be used to transmit information on resources occupied by the port0. In an exemplary embodiment, the port 0 and the port 1 may beorthogonal through OCC, as shown in FIG. 4c , so that the PUSCH and thePUCCH occupy the same time-frequency resources. In particular, inresponse to determining that the PUCCH and the PUSCH are sent throughbeams, the related interference between the two is small. Alternatively,as shown in FIG. 4d to FIG. 4e , the uplink control channel is locatedon several OFDM symbols in the front of the PUSCH. In FIGS. 4a to 4e ,resources occupied by DMRS ports are only exemplary and other cases arenot excluded, as long as it is ensured that the port of the PUCCH andthe port of the PUSCH are orthogonal or pseudo-orthogonal. The PUSCH isnot used to send signals on time-frequency resources occupied by thedemodulation reference signal of the PUCCH. The demodulation referencesignal of the PUCCH may be a time-frequency resource occupied by ademodulation reference signal of one PUCCH channel or may bedemodulation reference signal resources corresponding to all PUCCHchannels.

Alternatively, as shown in FIG. 4f , the PUCCH and the PUSCH may occupythe same time-frequency resource. For example, one PRB can bemultiplexed for six users by code division multiplexing of DMRS.Moreover, there is one PUCCH user on this PRB according to an implicitor explicit notification. In this case, since ports of the PUCCH andPUSCH are orthogonal, one or more of the remaining five ports that arenot utilized can be allocated to one PUSCH user. The resources occupiedby the DMRS in FIG. 4f are only exemplary. Other occupation manners arenot excluded as long as ports of the PUCCH and PUSCH may be orthogonal.

In an exemplary embodiment, the uplink control channel and the uplinkdata channel belong to different terminals. Alternatively, the uplinkcontrol channel and the uplink data channel belong to the same terminal,however, the terminal uses different beams for sending the uplinkcontrol channel and the uplink data channel, thereby reducinginterference between each other.

Embodiment Four

In this embodiment, the resource information of the PUCCH is obtainedaccording to the frequency-domain resource information of the PDSCH andthe demodulation reference information corresponding to the PDSCH.

If the ACK/NACK information corresponding to the PDSCH is transmitted onthe PUCCH, the frequency-domain resource information corresponding tothe PUCCH in the uplink transmission domain is obtained according to amaximum PRB index or a minimum PRB index of the frequency-domainresource occupied by the PDSCH.

Alternatively, as shown in FIG. 5a , the PUCCH corresponding to thedownlink PRB0˜2 (downlink PRB, hereinafter referred to as DPRB) is onthe PRB0˜2 of the uplink transmission domain (uplink PRB, hereinafterreferred to as UPRB). Due to MU-MIMO transmission, DPRB0 may be occupiedby multiple users. In this case, the PUCCHs of multiple users may bemapped to UPRB0. The first manner of distinguishing multiple PUCCHchannels in the same UPRB0 from each other is to obtain the code-domainresource of the PUCCH in UPRB0 through the port of the demodulationreference signal corresponding to the PDSCH. In an exemplary embodiment,a one-to-one correspondence exists between ports of the demodulationreference signals of the PDSCHs and the code-domain resources of theUPRB0. Alternatively, a many-to-one correspondence exists between portsof the demodulation reference signals of the PDSCHs and the code-domainresources of the UPRB0, and in this case, the PUCCHs corresponding tothe same code-domain resource can only be scheduled in time division.Since the time-domain resource of the PUCCH can be indicated by the basestation, this conflict may be resolved by means of base stationscheduling. Alternatively, a one-to-many correspondence exists betweenports of the demodulation reference signals of the PDSCHs and thecode-domain resources of the UPRB0, and in this case, one PUCCH channelcan be transmitted on multiple code-domain resources. For example, onePUCCH channel can be transmitted through different antennas by usingdifferent code-domain resources.

It is insufficient to depend on only the port of the demodulationreference signal of the PDSCH in the preceding implementation. Thesequences corresponding to the same port of the demodulation referencesignal are different, such as a port 7 in LTE which corresponds tonscid=0 and nscid=1. In an exemplary embodiment, in this case, theregions of the demodulation reference signal port information need to bedistinguished by both a port index and a sequence index. In this way,multiple PUCCHs on UPRB0 corresponding to multiple PDSCHs scheduled onmultiple DPRB0s can be distinguished from each other. For example, acorrespondence is established between ports of the demodulationreference signals, the sequences used by the ports and the code-domainresources of the UPRB0. Alternatively, for example, there are DNorthogonal ports used for MU-MIMO, each orthogonal port corresponds toDM sequences, and multiple sequences corresponding to the same port arepseudo-orthogonal. In this case, it is needed to establish DN*DMcorrespondences between the demodulation reference signal port resourcesof the PDSCHs and the code-domain resources of the uplink controlchannel resources on the UPRB0.

In the above embodiment, the multiple PUCCHs in one UPRB0 aredistinguished from each other only by means of code divisionmultiplexing. In the embodiment, it does not exclude that multiplePUCCHs in one UPRB0 are distinguished from each other by time-frequencyresources. That is, one uplink PRB resource includes multipletime-frequency resource groups, and each resource group is a minimumresource element mapped to one PUCCH. In this way, multiple PUCCHresources mapped to the same uplink PRB resource may be distinguishedfrom each other by different resource groups. As shown in FIG. 5b , oneUPRB0 has multiple UCCE resources. One UCCE is the minimum elementmapped to one PUCCH, i.e., is the time-frequency resource group. In someembodiments, other equivalent names are not excluded. The division ofthe time-domain resources of the multiple UCCEs in the same uplinkresource in FIG. 5b is only an example, and other division manners arenot excluded.

In the preceding implementation, multiple PUCCH resources mapped intothe same uplink PRB are distinguished from each other by code divisionor time-frequency resources. In this implementation, multiple PUCCHresources in the same uplink PRB are distinguished from each other bydifferent demodulation reference signal resources of the PUCCHs. Asshown in FIG. 5c , multiple PUCCHs mapped to one UPRB0 are sent ondifferent PUCCH demodulation reference signal ports. As long as it isensured that these PUCCH demodulation reference channels are orthogonal,multiple PUCCHs may occupy the same time-frequency resources. In thiscase, it is assumed that the interference between multiple PUCCHs isrelatively small, and it is also reasonable in a beam transmissionscenario.

In the above implementations, first the frequency-domain resourcecorresponding to the PUCCH is obtained according to the frequency-domainresource information corresponding to the PDSCH, and then at least oneof the time-frequency resource index, the code-domain resource or thedemodulation reference signal resource of the PUCCH in the correspondingPRB resource is obtained according to the demodulation reference signalresource information corresponding to the PDSCH. In anotherimplementation of the embodiment, one piece of logical PUCCH resourceinformation is obtained by using the frequency-domain resourcecorresponding to the PDSCH and the demodulation reference signalresource information corresponding to the PDSCH, and then informationabout the PUCCH is obtained according to the logical resourceinformation. Different logical PUCCH resources are distinguished by oneor more of frequency-domain resources, time-frequency resource groups inthe frequency-domain resources, code-domain resources, and demodulationreference signal port resources. As shown in FIG. 5d , multiple logicalPUCCHs are arranged into the uplink control channel region.

In the embodiment, when one PUCCH corresponds to multiple PRB resources,multiple DPRBs are needed to be mapped into the same group of UPRBs. Asshown in FIG. 5e , DPRB0˜DPRB2 correspond to the uplink control channelresource U0, DPRB3˜DPRB5 correspond to the uplink control channelresource U1. Alternatively, the mapping relation between the PRB indexesand the UPRB is

${{UPRBi} = \left\lfloor \frac{DPRBi}{L} \right\rfloor},$in which a starting resource index (or an ending resource index) of theUPRB are obtained first and then other frequency-domain resourcesoccupied by the PUCCH are determined according to the number offrequency-domain resources occupied by the UPRBs.

When one PUCCH occupies multiple PRB resources, one implementation is toobtain the starting resource index as described above, and then obtainmultiple PRBs having consecutive starting indexes as frequency-domainresources occupied by the PUCCH. In another implementation, multipleUPRBs occupied by the PUCCH are preferentially selected from UPRBscorresponding to multiple PRBs occupied by the PDSCH. For example, theselected UPRBs are multiple ones having the minimum index in thecorresponding UPRBs. When the number of the corresponding UPRBs is lessthan the number of UPRBs occupied by the PUCCH, the remaining PRBs aresearched for in sequence starting from the maximum value of thecorresponding UPRBs. Using FIG. 5f as an example, the PUCCH of theACK/NACK corresponding to the PDSCH is preferentially in the {PRB0,PRB4, PRB5} of the uplink transmission domain. The PUCCH is sent in{PRB0, PRB4} when the PUCCH requires two PRBs. The PUCCH is sent in{PRB0, PRB4, PRB5} when the PUCCH requires three PRBs. The PUCCH is sentin {PRB0, PRB4, PRB5, PRB6˜8} when the PUCCH requires six PRBs. The DMRSdemodulation reference signal may also determine an offset. As shown inFIG. 5a , UPRB0 is obtained according to a starting DPRB0 occupied bythe PDSCH, and then the offset is obtained according to a minimumdemodulation reference signal port (or a maximum demodulation referencesignal port) used by the PDSCH. For example, if the obtained offset is1, the starting PRB used by the PUCCH is UPRB1.

The DPRB is a PRB of the downlink transmission domain, and the UPRB is aPRB of the uplink transmission domain.

Whether the frequency-domain offset determined by the DMRS port or thelogical PRB index in the corresponding UPRB may be indicated bysignaling.

Similarly, a downlink ACK/NACK has the corresponding uplink PUSCH. Inthis case, the downlink control channel resource corresponding to thedownlink ACK/NACK may be obtained by using the frequency-domain resourcecorresponding to the PUSCH and the demodulation reference signal portinformation corresponding to the PUSCH.

Embodiment Five

In the embodiment, if the PUCCH is the ACK/NACK information of thePDSCH, the mapping of the PUCCH resources may be obtained by using indexinformation corresponding to DCI information (that is, the first controlinformation) corresponding to the PDSCH and demodulation referencesignal port information corresponding to the DCI information.

The first manner is to use the lowest frequency-domain indexcorresponding to the DCI. For example, in response to determining thatthe PRB is the minimum resource element of DCI mapping, first thefrequency-domain resource index corresponding to the PUCCH in the uplinktransmission domain is obtained according to the lowest (or highest) PRBindex corresponding to the DCI, and then at least one of atime-frequency resource index, a code-domain resource or a demodulationreference signal resource of the PUCCH in the corresponding PRB resourceis obtained according to the demodulation reference signal informationcorresponding to the DCI.

The second manner is to use the CCE index corresponding to the DCI. CCEis the smallest mapping element of DCI information mapping, and CCE maybe a logical index. An uplink PRB resource where the PUCCH is located isobtained according to the CCE index. Then at least one of atime-frequency resource index, a code-domain resource or a demodulationreference signal resource of the PUCCH in the corresponding PRB resourceis obtained according to the demodulation reference signal informationcorresponding to the DCI.

In the preceding implementations, the frequency-domain resourcecorresponding to the PUCCH is obtained first according to the indexinformation corresponding to the DCI, and then the time-frequencyresource index, the code-domain resource and the demodulation referencesignal resource of the PUCCH in the corresponding PRB resource isobtained according to the demodulation reference signal resourceinformation corresponding to the DCI. In another implementation of thisembodiment, one piece of logical PUCCH resource information is obtainedby using the index information corresponding to the DCI and thedemodulation reference signal resource information corresponding to theDCI, and then information about the PUCCH is obtained according to thelogical resource information. Different logical PUCCH resources aredistinguished by one or more of frequency-domain resources,time-frequency resource groups in the frequency-domain resources,code-domain resources, and demodulation reference signal port resources.

Referring to FIG. 6, for example, in one time unit (such as one slot),there are NC PRB resources or NC CCEs, each CCE corresponds to NCMdemodulation reference signal resources, and a mapping relation betweenNC×NCM downlink resources and PUCCH logical resources needs to beestablished. This mapping may be a one-to-one correspondence.Alternatively, this mapping may be a one-to-many correspondence, and inthis case, one downlink resource can be transmitted in multiple uplinktransmission resources, such as a manner of transmission diversity.Alternatively, this mapping may be a many-to-one relationship, and inthis case, the PUCCHs corresponding to multiple downlink resources aremapped to the same one logical PUCCH resource; and if a conflict occurs,the conflict may be avoided by means of base station resourcescheduling, for example, a time division is performed for the multipleconflicting PUCCH resources.

Embodiment Six

For the embodiment four, aperiodically triggered CSI reporting does nothave a corresponding PDSCH signal, which causes that the mappingrelation in the embodiment four cannot be applied to the mapping of thePUCCH resources of the CSI that is aperiodically triggered.

The first implementation is to semi-statically configure the PUCCHresource corresponding to the aperiodically triggered CSI. In anexemplary embodiment, the aperiodic CSI reporting and the periodic CSIreporting share the PUCCH resource. If aperiodic reporting and periodicreporting on the same time unit conflict with each other, the aperiodicCSI is preferentially reported. If the PUCCH corresponding to the CSIand the PUCCH corresponding to the ACK/NACK conflict with each other,that is, when the ACK/NACK and the CSI need to be reported on the samePUCCH, one manner is to report the ACK/NACK and the CSI on the PUCCHresource simultaneously and another manner is to report the ACK/NACKpreferentially.

The second implementation is that the PUCCH of the CSI obtains PUCCHresource information according to a DCI index corresponding to a triggersignaling corresponding to the CSI, and this implementation is similarto the embodiment five. However, when the ACK/NACK uses the method shownin the embodiment four, the conflict problem in which the ACK/NACK andCSI information occupy the same PUCCH resource also occurs. The basestation may perform time division for the ACK/NACK and CSI informationby scheduling, or the ACK/NACK may be sent preferentially and the CSI isdiscarded.

The third implementation is to notify the PUCCH resource in theaperiodic CSI. In this case, the base station knows which PUCCHs are notoccupied by other users and allocates the resources to the aperiodic CSIfor reporting, which is similar to the allocation of the PUSCH resourcesfor the aperiodic PUCCH reporting.

The manner of using priority when conflict occurs is applicable to thecase where ACK/NACK and CSI of the same user conflict with each other.The manner of base station scheduling is applicable to the case whereACK/NACK and CSI belong to different users. For example, if ACK/NACK isreported by a user 1 and CSI is reported by a user 2, the conflict canbe solved only by the base station scheduling.

When the base station needs to feed back the CSI information to theterminal, the similar manner can also be used for a downlink controlchannel for CSI information feedback or used for a downlink PDSCHchannel for CSI feedback.

Embodiment Seven

In the embodiment, the terminal first acquires a time-domain symbolending position and a frequency-domain starting position correspondingto the PUCCH, as well as information about the number UCCEN of uplinkcontrol channel resources. The uplink control channel resource UCCE isthe minimum resource element used by an uplink control channel.

In the embodiment, the demodulation reference signal information of thedownlink control channel (or the downlink data channel) is determinedaccording to the sending manner information fed back by the terminal.The sending manner is information about the relevant downlinktransmitting beam. Different sending manners are distinguished from eachother by at least one of the following information: a transmitting beam,port information of a measurement reference signal, a time-domainresource where the measurement reference signal is located, afrequency-domain resource where the measurement reference signal islocated, or a sequence resource used by the measurement referencesignal. For example, the sending manners are logically numbered by atleast one of the preceding information. In the embodiment, the sendingmanner may also be determined by establishing a quasi-co-location (QCL)relationship between different reference signals. For example, it isindicated that the sending manner used by the terminal is determinedaccording to a measurement reference signal port, which is to establisha quasi-co-location relationship between a demodulation reference signalof the control channel and the measurement reference signal. Themeasurement reference signal may be a downlink measurement referencesignal, and in this case, reciprocity is used to obtain transmittingbeams of the control channel. Alternatively, the measurement referencesignal may also be an uplink measurement reference signal, and in thiscase, the transmit beams of the control channel and transmit beams ofthe uplink measurement reference signal are the same.

The first acquisition manner of the resources corresponding to the PUCCHis that: the number UCCE-OFDM-N of UCCEs occupied by the PUCCH in eachtime-domain symbol is specified, and when UCCEN is greater thanUCCE-OFDM-N, the remaining UCCEs occupy resources at the front symbol.That is, the number of time-domain symbols occupied in this case is┌UCCEN/UCCE−OFDM−N┐. FIG. 7a shows an example of resources occupied bythe PUCCH when UCCEN=4 and UCCE−OFDM−N=3. In FIG. 7a , thefrequency-domain position of UCCE3 at the front symbol is the same asthe frequency-domain starting position at the ending symbol. In FIG. 7b, the frequency-domain position of UCCE3 at the front symbol is the sameas the frequency-domain ending position at the rear symbol. In theembodiment, it is not excluded that UCCE3 occupies the same position asthe maximum frequency-domain position at the ending symbol, as shown inFIG. 7c . Alternatively, the frequency-domain position of UCCE3 in thefront symbol is mapped according to a certain frequency hoppingprinciple which such as a difference between the frequency-domainpositions of UCCE3 and UCCE2 is agreed frequency-domain resources.Alternatively, UCCE3 is mapped into the agreed frequency-domainbandwidth, and the agreed frequency-domain bandwidth is notified bysemi-static signaling.

The second acquisition manner of the resources corresponding to thePUCCH is to first perform frequency-domain resource mapping on theending symbol, and then perform the mapping from the bottom of thepredetermined bandwidth of the front symbol in response to mapping tothe top of the predetermined system bandwidth of the ending symbol.

In the preceding implementations, the frequency-domain starting positionand the time-domain ending position of the PUCCH are notified bysignaling, or the time-domain ending position is the ending position ofthe uplink transmission domain by default.

A first manner for notifying the number UCCEN of UCCEs occupied by onePUCCH is to notify by a dynamic signaling. Another manner for notifyingthe number UCCEN is to first notify semi-statically a number set, forexample, {1, 4, 8, 16}, to which UCCEN belongs, and then, to notify theindex information of the number in the number set by the dynamicsignaling. For example, if the notified index is 1, the correspondingUCCEN is 4. Another manner of obtaining the number of UCCEs that onePUCCH may occupy is an obtaining manner similar to that in theembodiment two, that is, the number of UCCEs corresponding to one PUCCHis determined according to the type of the second control informationtransmitted on the control channel.

In the embodiment, one UCCE may be composed of one time-domain symbol,and one or more PRB resources occupied by the frequency domain.Alternatively, for one UCCE, the frequency domain is formed byfrequency-domain groups in one PRB.

In the embodiment, the notification manner is to notify the endingtime-domain symbol position and the starting frequency-domain position.In another implementation of the embodiment, it is to notify at leastone of the starting time-domain symbol position or the startingfrequency-domain position, however, when the current multiple UCCEscannot be carried on the notified symbol, the UCCEs are placed on thesubsequent symbol(s).

Embodiment Eight

In the embodiment, the base station determines the demodulationreference signal according to the CSI information fed back by the firstcommunication node (for example, the terminal) and sends a signal to thefirst communication node by using the determined demodulation referencesignal. The sent signal satisfies one or more of the following features:the sent signal is a data signal and the demodulation reference signalis a demodulation reference signal of the data channel; the sent signalis a control signal and the demodulation reference signal is ademodulation reference signal of the control channel. The CSIinformation fed back by the first communication node (for example, theterminal) includes transmission resources corresponding to the firstcommunication node. The transmission resources include one or more ofthe following resources: transmitting beam resources, transmission portresources, transmission precoding matrix resources, transmission timeresources, transmission frequency-domain resources and transmissionsequence resources. The base station and the terminal agree on acorrespondence between the transmission resources and the demodulationreference signal ports. The correspondence satisfies one or more of thefollowing features: a one-to-one correspondence existing between thetransmission resources and the demodulation reference ports, aone-to-one correspondence existing between the transmission resourcesand the demodulation reference port sets, and multiple transmissionresources corresponding to the same demodulation reference port.

The CSI information fed back by the first communication node may furtherinclude channel rank indication (RI), and a correspondence existingbetween the number of demodulation reference signal ports and the RI.

In the embodiment, the demodulation reference signal information of thedownlink control channel (or the downlink data channel) is determinedaccording to the sending manner information fed back by the terminal.The sending manner is information about the relevant downlinktransmitting beam. Different sending manners are distinguished from eachother by at least one of the following information: a transmitting beam,port information of a measurement reference signal, a time-domainresource where the measurement reference signal is located, afrequency-domain resource where the measurement reference signal islocated, or a sequence resource used by the measurement referencesignal. For example, the sending manners are logically numbered by atleast one of the preceding information. In the embodiment, the sendingmanner may also be determined by establishing a quasi-co-location (QCL)relationship between different reference signals. For example, it isindicated that the sending manner used by the terminal is determinedaccording to a measurement reference signal port, which is to establisha quasi-co-location relationship between a demodulation reference signalof the control channel and the measurement reference signal. Themeasurement reference signal may be a downlink measurement referencesignal, and in this case, reciprocity is used to obtain transmittingbeams of the control channel. Alternatively, the measurement referencesignal may also be an uplink measurement reference signal, and in thiscase, the transmit beams of the control channel and transmit beams ofthe uplink measurement reference signal.

Embodiment Nine

In the embodiment, when the number of time-domain symbols occupied bythe PUCCH is more than one, the demodulation reference signal of thePUCCH satisfies the following feature: the multiple time-domain symbolsare divided into multiple time-domain units, each time-domain unitcarries the demodulation reference signal for demodulating thistime-domain unit, and demodulation reference signals of differenttime-domain units cannot be interpolated with each other.

For example, the number of time-domain symbols occupied by the PUCCH isX9, where X9 is a natural number larger than 1, then the X9 time-domainsymbol numbers are divided into Y9 time-domain sub-units, and eachtime-domain sub-unit includes ┌X9/Y9┐ time-domain symbols at most, whereY9 is a natural number less than or equal to X9.

Alternatively, as shown in FIGS. 8a-8b , the PUCCH occupies four OFDMsymbols, each symbol is a time sub-unit, and there is a demodulationreference signal on each OFDM symbol. The demodulation reference signalon each symbol may be used for demodulation of the second controlinformation of the current unit and not used for demodulation of thesecond control information on other symbols. This allows the firstcommunication node to send the second control information on differentsymbols by using different sending manners (for example, transmittingbeams). Transmission diversity or repeated transmission may be usedalso. Complete second control information can be transmitted via thesignal on each time-sub-unit. The patterns occupied by the demodulationreference signals shown in FIGS. 8a-8b are merely examples, and otherpatterns are not excluded in the embodiment.

Alternatively, as shown in FIGS. 8c-8d , the four OFDM symbols occupiedby the PUCCH are divided into two time sub-units, and two consecutivetime-domain symbols form one time sub-unit. Patterns occupied by thedemodulation reference signals shown in FIGS. 8c-8d are merely examples,and other patterns are not excluded in the embodiment.

The division manners for the time sub-units in FIGS. 8a-8d are merelyexamples, and other implementations are not excluded in the embodiment.

How many time sub-units the symbols are divided into is fixed, notifiedby signaling or determined according to the number (which is agreed bythe base station and the terminal) of transmitting beam sets used tosend the PUCCH. The number of transmitting beam sets used to send thePUCCH is the value of Y9.

The preceding modes of the demodulation reference signal can allow that,on different time sub-units, the transmitting beams of the terminal aredifferent, and the receiving beams of the base station are alsodifferent.

Embodiment Ten

In the embodiment, when the number of time-domain symbols of the PUCCHis more than one, the demodulation reference signal of the PUCCH has twomodes.

The first mode is as shown in FIGS. 12a ˜12 b. The multiple time-domainsymbols of the PUCCH share one demodulation reference signal resourceand are not divided into multiple time sub-units. As illustrated in theembodiment nine, one demodulation reference signal can be used fordecoding of control information on all time-domain symbols correspondingto one PUCCH. The patterns of the demodulation reference signal shown inFIGS. 12a ˜12 b are merely examples, and other patterns of thedemodulation reference signal are not excluded.

The second mode is as illustrated in the embodiment nine in which thePUCCH is divided into multiple time sub-units, and the demodulationreference signals between the multiple time sub-units are independent ofeach other.

For the two pattern modes of the demodulation reference signal, a firstmanner for indicating is to indicate which mode to be adopted throughbase station signaling (a dynamic signaling or a semi-static signaling),and a second manner is based on the number of time-domain symbolsoccupied by the PUCCH. As for the second manner, in response todetermining that the number of time-domain symbols is less than apredetermined threshold, the second mode is adopted; otherwise, thefirst mode is adopted. A third manner is that the terminal determines,according to the transmission modes used by the terminal to send thePUCCH, which mode is to be adopted. For the third manner, if thetransmission diversity or repeated transmission is adopted, the secondmode is adopted, otherwise, the first mode is adopted. The four manneris based on the number of transmitting beam sets used by the terminal tosend the PUCCH; and, if the number of transmitting beams is 1, the firstmode is adopted, otherwise, the second mode is adopted.

The above first mode allows that, on one PUCCH, the transmitting beamsof the terminal are unchanged, and the receiving beams of the basestation are also unchanged.

Embodiment Eleven

In the example, the resources of the PUCCH are determined according tothe time-domain resources of the downlink PDSCH. The resources of thePUCCH include at least one of the following resources: time-domainresources, frequency-domain resources or code-domain resources.

For example, the resources of the PUCCH are determined according to theending time-domain resource of the PDSCH. The according to the endingtime-domain resource of the PDSCH includes at least one of: time unitindex information corresponding to the ending time-domain resource ortime-domain symbol index information corresponding to the endingtime-domain resource in the time unit.

Embodiment Twelve

In the embodiment, the PUCCH is divided into multiple control channelresource elements. The control resource elements have X12 time-domainsymbols and Y12 subcarriers. In an exemplary embodiment, X12=1 and Y12is the number of subcarriers included in one PRB or a fixed number ofPRB s.

Each control channel resource element includes multiple DMRS ports, andthese DMRS ports are orthogonal or pseudo-orthogonal through sequences.Thus, different users can occupy different numbers of control resourceelements and they can be orthogonal or pseudo-orthogonal to each otherthrough the DMRS ports, thereby achieving that multiplexing is performedbetween terminals with different numbers of control channel resources.

As shown in FIG. 12c , it is assumed that X12=1 and Y12 is the number ofsubcarriers occupied by one PRB. As shown in FIG. 12c , there are atotal of 10 control channel resource elements (UCCEs): UCCE0˜UCCE9.Since there are multiple orthogonal DMRS ports on each UCCE, theterminal 1 may occupy the time-frequency resources in UCCE0˜UCCE9 andoccupy the first DMRS port on each UCCE, while the terminal 2 may occupyany one or more of the control channel resources in UCCE0˜UCCE9.However, the terminal 2 occupies the second DMRS port on each occupiedUCCE. Since the first DMRS port and the second DMRS port are orthogonal,the PUCCH of the terminal 1 and the PUCCH of the terminal 2 areorthogonal. In an exemplary embodiment, the DMRS ports in each UCCE areorthogonal by means of code division mode.

The number of UCCEs, X12 and Y12, in FIG. 12c are merely an example, andother cases of numbers are not excluded.

Embodiment Thirteen

In the embodiment, the second communication node sends the first controlinformation to the first communication node. The first controlinformation includes a sending manner used by the second communicationnode to send the control channel.

The different sending manners are distinguished from each other by atleast one of the following information: a transmitting beam,transmission precoding information, transmission time, or a transmissionfrequency-domain resource.

The first control information includes information of notifying asending manner used by the first communication node to send the controlchannel, which satisfies at least one of the features described below.

The codebook index information used by the control channel is notifiedin the first control information. For example, the base station notifiesPMI used by the terminal to send the uplink control information.

The measurement reference signal information is notified in the firstcontrol information, and the information about the sending manner usedto send the control channel is obtained by the first communication nodeaccording to port information of the measurement reference signal. Themeasurement reference signal information includes at least one of thefollowing information: measurement reference set information, resourceindex information of the measurement reference signal, time-domaininformation corresponding to the measurement reference signal,frequency-domain information corresponding to the measurement referencesignal, or sequence information corresponding to the measurementreference signal. The measurement reference signal satisfies at leastone of the following: the measurement reference signal is the signalsent by the first communication node to the second communication nodebefore, or the measurement reference signal is the signal sent by thesecond communication node to the first communication node before. Forexample, the base station (the second communication node), by using thefirst control information, notifies the terminal (the firstcommunication node) of at least one of information about an SRS resourceID or an SRS port, while the terminal sends at least one of the SRSresource or the SRS port to the base station before (or in the same timeunit as the control channel). The terminal sends the uplink controlinformation to the base station by using precoding or a beamcorresponding to at least one of the SRS resource or the SRS port; whilethe base station may also send at least one of a downlink referencesignal resource or a downlink reference signal port to the terminal inthe first control information, so that the terminal sends the controlinformation to the base station by using a transmitting beamcorresponding to at least one of the downlink reference signal resourceor the downlink reference signal port. For example, in the case wherethe uplink and downlink reciprocity exists on the terminal side, theterminal may obtain the uplink transmitting beam for sending the uplinkcontrol channel according to the receiving beam for receiving thedownlink reference signal. The downlink reference signal includes atleast one of a downlink measurement reference signal or a downlinkdemodulation reference signal.

Logical beam information is notified in the first control information.Different logical beams are distinguished from each other by at leastone of the information described below. Different logically numberedbeams are distinguished from each other by at least one of the followingfeatures: information about a reference signal port, information about areference signal resource, time-domain information of a referencesignal, frequency-domain information of a reference signal, or sequenceinformation of a reference signal.

When the time-domain information of the signal is included in thelogical number of a beam, one reference signal port corresponds todifferent logical beams when the one reference signal port at differenttime-domain regions.

When the frequency-domain information of the signal is included in thelogical number of a beam, one reference signal port corresponds todifferent logical beams when the one reference signal port at differentfrequency-domain regions.

The manner that the base station sends the first control information maybe at least one of the following ways: a high-level signaling (such asan RRC signaling, or a MAC CE signaling) or a physical-layer dynamicsignaling.

In the embodiment, the terminal may need to adopt multiple sendingmanners (or multiple sending manner sets) to send the PUCCH to the basestation, and the base station needs to notify a correspondence betweenthe multiple sending manners (the multiple sending manner sets) andtime-domain resources of the control channel. In an exemplaryembodiment, the multiple sending manners (or multiple sending mannersets) may only be generated by the terminal in a time division manner.The first notification manner of the correspondence is to notify only anorder of the sending manners, while the time-domain resources occupiedin each sending manner are divided according to an agreed rule. Forexample, the time-domain resources of the control channel are basicallydivided into equal proportions according to the number of sendingmanners (or sending manner sets). For example, the terminal needs tosend the PUCCH in four slots and use two sending manners (or two sendingmanner sets), and then the base station notifies the terminal that thesending manner 1 (or the first sending manner set) is used in the firsttwo slots and the sending manner 2 (or the second sending manner set) isused in the last two slots. In the embodiment, the correspondencebetween the sending manners and the slots is merely an example and otherrelationships are not excluded. Of course, in the embodiment, the PUCCHresources may be on multiple time-domain symbols of one slot, and thebase station notifies the time-domain resources of the PUCCHcorresponding to each sending manner. As shown in FIGS. 8c-8d , thePUCCH with a length of four time-domain symbols is divided into twotime-domain regions, and each time-domain region corresponds toinformation about one transmitting beam (or transmitting beam set). Thesecond notification manner of the correspondence is that the basestation notifies the terminal of uplink control channel resourcescorresponding to each sending manner (or sending manner set) and thennotifies that the multiple uplink control channel resources are used totransmit one piece of uplink control information repeatedly.

The preceding sending manners are in time division. Of course, theembodiment does not exclude the sending manners in frequency division,and the base station notifies the correspondence between the multiplesending manners and multiple frequency-domain resources in a similarmanner.

Embodiment Fourteen

In the embodiment, the base station notifies information about uplinkcontrol channel resource sets through a physical-layer common signaling,so that the terminal may select one or more resource sets from theuplink control channel resource set randomly or according to apredetermined rule to send the control channel.

For example, the base station sends, through the common signaling, theuplink control channel resources that are not occupied in the currenttime unit. The terminal having a beam recovery request or a resourcerequest may randomly select one or more uplink control resources from anidle uplink control channel resource set to send the beam recoveryrequest or the resource request information. Alternatively, other burstrequest information is sent on the selected resources.

Alternatively, the terminal selects one or more uplink control resourcesfrom the idle uplink control channel resource set according to thepredetermined rule to send the beam recovery request or the resourcerequest information. Alternatively, other burst request information issent on the selected resources.

The physical-layer common control signaling may be a Cell-Specificcontrol signaling or a group common control signaling.

In an exemplary embodiment, the terminal may select the uplink controlchannel resources from the idle control channel resource set only in apredetermined time unit to perform reporting but cannot perform theselection when not in the predetermined time unit. The predeterminedtime unit may be agreed by the base station and the terminal in advanceor notified to the terminal through the control signaling. For example,the predetermined time unit is a time unit that satisfies a certainperiodicity. Since the request information is the burst request, theterminal selects the control channel resources in the predetermined timeunit only when the burst request is required.

One control channel resource includes at least one of the followingresources: a time-domain resource, a frequency-domain resource, acode-domain resource or a transmitting beam resource.

In the embodiment, the terminal may also send other control information,such as ACK/NACK and CSI information, etc., on the selected uplinkcontrol channel resources.

In the embodiment, a manner of notifying the uplink control channelresource set on the common control channel is to notify an uplinkcontrol channel resource pool. For example, the uplink control channelresources available in the current time unit are logically numbered 0 toN, K is notified on the common control channel, and it is agreed withthe terminal that the uplink control channel resource set is composed ofcontrol channel resources logically numbered {K, K+1, . . . , N}.

Embodiment Fifteen

In the embodiment, the base station notifies uplink control channelresources by using two-level signaling. The time unit (or time unit set)where the uplink control channel is located is notified in the firstlevel signaling. At least one of a time-domain resource, afrequency-domain resource or a code-domain resource occupied by theuplink control channel in the notified time unit is notified by thesecond level signaling.

For example, the uplink control channel is used for sending CSIinformation. The CSI information is sent periodically orsemi-periodically. For example, the terminal sends the CSI informationevery 5 slots (this is notified in the first level signalinginformation, and in an exemplary embodiment, the first level signalinginformation may be high-layer signaling information), and the terminaldetects the PDCCH on each slot unit that needs to send and notifies thePUCCH resources occupied for sending the CSI information in the PDCCH.The PDCCH may be a dedicated PDCCH or a group PDCCH. In the group PDCCH,PUCCH resources are notified to multiple terminals, which is similar tothe DCI format 3/DCI format 3A manner in LTE used to notify the TPCcommand.

Alternatively, for example, the ACK/NACK is sent on the PUCCH, the timeunit where the PUCCH is located is notified in the control signaling(the first level control signaling) for notifying the PDSCH, and thenthe resources occupied by the PUCCH are notified in the controlsignaling (the second level control signaling) in the notified timeunit. The resource includes at least one of the following resources: thetime-domain resource, the frequency-domain resource or the code-domainresource. The second control signaling may be a common control signalingor a dedicated control information.

Embodiment Sixteen

In the embodiment, the base station (the second communication node)notifies, in a dynamic control signaling, information about a controlchannel format used by the terminal (the first communication node) tosend the control channel. The information about the control channelformat is distinguished in at least one of the following manners: atime-domain spreading manner, a frequency-domain spreading manner, themaximum number of bits that can be transmitted, a multiplexing manner ofmultiple pieces of second control information, or the type of the secondcontrol information that can be carried on the control channel, which issimilar to PUCCH format 1/format 1a/format 1b/format 2a/format 2b/format3/format 4 in LTE.

Embodiment Seventeen

In the embodiment, the base station (the second communication node)notifies in the first control information at least one of a modulationmanner or a coding rate, which is used by the terminal (the firstcommunication node) to send the control channel, of the control channel.The first control information may be at least one of the followingsignaling: an RRC signaling, a MAC CE signaling or a physical dynamicsignaling.

Embodiment Eighteen

In the embodiment, the base station notifies the terminal of one SRSport group. Different SRS ports in the SRS port group correspond todifferent transmitting beams and the same receiving beams reaching thebase station. The terminal may freely select a transmitting beamcorresponding to one SRS port in the SRS group. For example, thetransmitting beam information of the uplink control channel includes oneSRS port group, and the terminal selects transmit beams corresponding toone or more ports from the SRS group to send the uplink control channel.Alternatively, the one SRS port group may be associated with onedownlink reference signal port or downlink reference signal resource,and the terminal may, according to the receiving beam response of thedownlink reference signal, select transmitting beams corresponding toone or more ports from the SRS group to send the uplink control channel.

The SRS port group may be replaced with an SRS resource group. The SRSport group may also be replaced with an SRS port group and an SRSresource group.

Embodiment Nineteen

In the embodiment, the base station notifies uplink transmitting beaminformation by a downlink reference signal. In this case, theimplementation of the terminal is one of the following.

Implementation one: after the terminal obtains an uplink transmittingbeam according to a receiving beam of the downlink reference signal in afirst time unit, the uplink transmitting beam is kept being unchanged.

Implementation two: after the terminal obtains an uplink transmittingbeam according to a receiving beam of the downlink reference signal in afirst time unit, the terminal changes the uplink transmitting beamaccording to the receiving beam of the downlink reference signal in asecond time unit. The base station sends the downlink reference signalin the first time unit and the second time unit.

Alternatively, the uplink control channel is a PUCCH, the second uplinkcontrol information is UCI, and the downlink control channel is a PDCCH(or a downlink control channel that feeds back CSI).

The sending manner of the uplink control channel in the precedingembodiments can also be used to send the downlink control channel.

FIG. 10 is a structure diagram of a device for sending a control channelaccording to an embodiment. The device is applied to a firstcommunication node. As shown in FIG. 10, the device includes: adetermining unit 1001 and a sending unit 1002.

The determining unit 1001 is configured to determine second transmissionparameter information about the control channel according to at leastone of first control information or first parameter information.

The sending unit 1002 is configured to send the control channel to asecond communication node according to the second transmission parameterinformation.

The first parameter information includes at least one of the followinginformation: demodulation reference signal information corresponding tothe first control information, demodulation reference signal informationof a data channel corresponding to the control channel, type informationof second control information transmitted on the control channel, orchannel coding rate information corresponding to the first controlinformation.

Alternatively, the first control information is sent by the secondcommunication node to the first communication node and the secondcontrol information is sent by the first communication node to the firstsecond communication node, where the second control information is onthe control channel.

Alternatively, the second transmission parameter information includes atleast one of the following information: information about a controlchannel region, information about frequency-domain resources occupied bythe control channel, information about time-domain symbols occupied bythe control channel, information about demodulation reference signals ofthe control channel, code-domain resources occupied by the controlchannel, or a multiplexing manner of multiple pieces of second controlinformation.

In an embodiment, the first control information is first controlinformation related to the data channel corresponding to the controlchannel.

The data channel and the first control information are received by thefirst communication node from the second communication node.

In an embodiment, the demodulation reference signal information includesat least one of the following information: port index information of ademodulation reference signal; or index information of sequences adoptedby the demodulation reference signal.

In an embodiment, the device further includes a means for obtainingresource information corresponding to the control channel according tothe demodulation reference signal information of the data channel and atleast one of the following information: frequency-domain resourcescorresponding to the data channel, index information corresponding tothe first control information, or time unit index informationcorresponding to the data channel.

In an embodiment, the device further includes a means for: obtaining,according to one or more minimum frequency-domain resource indexescorresponding to the data channel, a second frequency-domain resourceoccupied by the control channel; obtaining, according to one or moremaximum frequency-domain resource indexes corresponding to the datachannel, the second frequency-domain resource occupied by the controlchannel; obtaining third resource information of the control channel inthe second frequency-domain resource according to the demodulationreference signal information corresponding to the data channel.

In an embodiment, the third resource information includes at least oneof the following information: a time-frequency resource group index ofthe control channel in the second frequency-domain resource, where thesecond frequency-domain resource includes multiple time-frequencyresource groups; a code-domain resource index of the control channel inthe second frequency-domain resource; or demodulation reference signalresource information corresponding to the control channel.

In an embodiment, the device further includes a means for obtainingthird transmission parameter information of the control channelaccording to the demodulation reference signal information correspondingto the first control information and index information corresponding tothe first control information.

In an embodiment, the third transmission parameter information includesat least one of the following resource information: a time-domainresource corresponding to the control channel, the frequency-domainresource corresponding to the control channel, a code resourcecorresponding to the control channel, or a time-frequency-code resourcecorresponding to a demodulation reference signal of the control channel.

In an embodiment, the device further includes a means for: sendinganother signal according to the information about the control channelregion; or when a frequency-domain resource allocated for another signalin a current time unit intersects with a frequency-domain resource wherethe control channel region is located, not sending the another signal onthe control channel region; wherein the another signal includes at leastone of the following signals: a data channel signal, a measurementreference signal, a demodulation reference signal, an access requestsignal or a scheduling request signal.

Alternatively, a resource occupied by the control channel is a subset ofa resource occupied by the control channel region.

In an embodiment, the information about the control channel regionincludes at least one of the following information: a number ofsub-regions included in the control channel region, information aboutfrequency-domain resources of each of the sub-regions, or informationabout a number of time-domain symbols corresponding to each of thesub-regions.

In an embodiment, the control channel region satisfies one of thefollowing features: the control channel region occupies two sides of apredetermined bandwidth; on an upper side of the predeterminedbandwidth, the greater a number of time-domain symbols corresponding toa sub-region is, the higher an occupied frequency-domain position is,where the higher the frequency-domain position is, the greater asubcarrier number of a subcarrier at which the sub-region is located is;on a lower side of the predetermined bandwidth, the greater the numberof the symbols corresponding to the sub-region is, the lower theoccupied frequency-domain position is, where the lower thefrequency-domain position is, the smaller the subcarrier number of thesubcarrier at which the sub-region is located is; when the sub-regionincludes N time-domain symbols, an ending symbol of the N time-domainsymbols is an ending symbol of a second transmission domain; and whenthe sub-region includes the N time-domain symbols, a starting symbol ofthe N time-domain symbols is a starting time-domain symbol of the secondtransmission domain. The second transmission domain corresponds to aregion of the second communication node receiving a signal.

In an embodiment, indication information indicating information aboutthe number of time-domain symbols of the control channel in the firstcontrol information includes at least one of the following information:whether a duration of the control channel is a long duration or a shortduration; a starting symbol index of the control channel; an endingsymbol index of the control channel; the number of the time-domainsymbols of the control channel; or an index of the number of thetime-domain symbols of the control channel in an agreed set of numbersof time-domain symbols.

In an embodiment, when obtaining that a duration of the control channelis a long duration, a number of time-domain symbols of the controlchannel is equal to a number of time-domain symbols of a correspondingtransmission domain. The corresponding transmission domain and thecontrol channel have a same transmission direction.

In an embodiment, the control channels with the long duration indifferent time units correspond to different numbers of time-domainsymbols.

In an embodiment, the device further includes a means for performing atleast one of the following: determining information about the number oftime-domain symbols occupied by the control channel or information aboutthe number of frequency domains of the control channel according to atype of the second control information transmitted on the controlchannel; determining the information about the number of the time-domainsymbols of the control channel or the information about the number ofthe frequency domains of the control channel according to informationabout a channel quality level or a capability level of the firstcommunication node, where the first communication node feeds back thecapability level information or the channel quality level information tothe second communication node; determining the information about thenumber of the time-domain symbols occupied by the control channel or theinformation about the number of the frequency domains of the controlchannel according to a channel coding rate corresponding to the firstcontrol information; determining the information about the number of thetime-domain symbols occupied by the control channel or the informationabout the number of the frequency domains of the control channelaccording to a channel coding rate of a first data channel correspondingto the second control information; or determining the information aboutthe number of the time-domain symbols occupied by the control channel orthe information about the number of the frequency domains of the controlchannel according to a channel coding rate of a second data channel.

Different types of the control channel are distinguished from each otherby at least one of the following information: whether the second controlinformation is Channel State Information (CSI) orAcknowledgement/Negative-Acknowledgement (ACK/NACK) information, aninformation length of the second control information, the first datachannel being a data channel sent by the second communication node tothe first communication node, the second data channel being a datachannel sent by the first communication node to the second communicationnode in a current time unit, or the current time unit being a time unitwhere the control channel is located.

In an embodiment, multiple pieces of second control information havingthe same number of time-domain symbols are sent on one control channel.In an embodiment, multiple pieces of second control information of thesame type are sent on one control channel. Different types of secondcontrol information are distinguished from each other by at least one ofthe following information: whether the second control information is CSIinformation or ACK/NACK information, an information length of the secondcontrol information, or a service type of the data corresponding to thesecond control information. The multiple pieces of second controlinformation are multiple pieces of second control information needed tobe fed back in the current time unit.

In an embodiment, the device further includes a means for performing atleast one of: when multiple pieces of second control information neededto be fed back in a current time unit are sent on one control channel,obtaining resource information of the control channel according to firstcontrol information corresponding to a highest time unit index amongmultiple pieces of first control information related to the multiplepieces of second control information; or when the multiple pieces ofsecond control information needed to be fed back in the current timeunit are sent on the one control channel, obtaining the resourceinformation of the control channel according to control channel resourceinformation corresponding to the multiple pieces of second controlinformation.

In an embodiment, a time-frequency-domain position of a demodulationreference signal of the control channel is obtained in one of thefollowing manners: whether the demodulation reference signal is on astarting symbol or an ending symbol of the control channel is obtainedaccording to the first control information; whether frequency-domainresources occupied by the demodulation reference signal in onetime-domain symbol are continuous or discrete is obtained according tothe first control information; parameters related to the demodulationreference signal are determined according to information about thenumber of time-domain symbols of the control channel; the parametersrelated to the demodulation reference signal are determined according towhether the control channel and a second data channel are allowed to bein code division multiplexing mode; the parameters related to thedemodulation reference signal are determined according to the number ofsending manner sets; and the parameters related to the demodulationreference signal are determined according to a sending mode of thecontrol channel, where the sending mode includes a single-layertransmission, a transmission diversity mode and a repeated transmission.The second data channel is a data channel sent by the firstcommunication node to the second communication node or by a thirdcommunication node to the second communication node.

In an embodiment, the first control information satisfies at least oneof the following features: the first control information is high-layersemi-static control information; or the first control information isphysical-layer dynamic control information.

In an embodiment, frequency-domain resource information of the controlchannel is obtained in the following manner: physical-layer dynamicinformation to notify the frequency-domain resource.

Alternatively, the frequency domain resource may occupy any one or morefrequency-domain resources within a predetermined bandwidth. In anexemplary embodiment, one frequency-domain resource is one PRB, onesub-band, one CCE or one REG

In an embodiment, resources occupied by the control channel satisfy thefollowing feature: obtaining an ending time-domain symbol position and astarting frequency-domain resource corresponding to the control channel,as well as information about a number of resource elements of thecontrol channel; and for the multiple resource elements of the controlchannel, first mapping in a frequency domain and then mapping in a timedomain.

In an embodiment, the first parameter information further includes indexinformation of a time unit at which the data channel or the firstcontrol information is located.

In an embodiment, time resource information of one of the data channeland the first control information includes at least one of the followinginformation: index information of a time unit at which the data channelor the first control information is located; index information of atime-domain symbol at which the data channel or the first controlinformation is located; index information of a time unit at which atime-domain ending position of one of the data channel or the firstcontrol information is located; or index information of a time-domainsymbol at which the time-domain ending position of one of the datachannel or the first control information is located.

In an embodiment, demodulation reference signal resource information ofthe second control information is determined according to the CSI in thefirst control information.

In an embodiment, CSI information fed back by the first communicationnode includes a transmission resource corresponding to the firstcommunication node. The transmission resource includes one or more ofthe following types of resources: a transmitting beam resource, atransmission port resource, a transmission precoding matrix resource, atransmission time resource, a transmission frequency-domain resource anda transmission sequence resource.

In an embodiment, the first control information satisfies at least oneof the following: the first control information is common controlinformation, where the common control information may be a group commonphysical downlink control channel (Group common PDCCH); the firstcontrol information includes information that notifies a control channelresource set of a current time unit; the first control informationincludes information that notifies a sending sequence of multiplesending manners used by the first communication node to send the controlchannel; the first control information includes information thatnotifies a correspondence between time-domain regions of the controlchannel and the multiple sending manners or sending manner sets used tosend the control channel; the first control information includes atleast one of information for notifying time-domain resourcecorresponding to each sending manner in the multiple sending manners orinformation for notifying frequency-domain resource corresponding toeach sending manner in the multiple sending manners, wherein themultiple sending manners are used by the first communication node tosend the control channel; the first control information includes atleast one of information for notifying time-domain resourcecorresponding to each sending manner set in the multiple sending mannersets or information for notifying frequency-domain resourcecorresponding to each sending manner set in the multiple sending mannersets, wherein the multiple sending manner sets are used by the firstcommunication node to send the control channel; the first controlinformation includes information that notifies a sending manner used bythe first communication node to send the control channel, whereinformation about the sending manners may also be referred to as beaminformation or precoding information; the first control informationincludes information that notifies a control channel format used by thefirst communication node to send the control channel, where differentcontrol channels are distinguished from each other in at least one ofthe following manners: a frequency-domain spreading manner, atime-domain spreading manner, the maximum number of bits that can betransmitted, or a multiplexing manner of multiple pieces of secondcontrol information; the first control information includes informationthat notifies a modulation manner used by the first communication nodeto send the control channel; or the first control information includesinformation that notifies a coding rate used by the first communicationnode to send the control channel.

In an embodiment, the sending unit 1002 is further configured to:randomly select one or more control channel resources from the controlchannel resource set and send the control channel on the one or morecontrol channel resources; or select one or more control channelresources from the control channel resource set according to apredetermined rule and send the control channel on the one or morecontrol channel resources. The predetermined rule is identificationinformation of the first communication node.

In an embodiment, the sending manners are indicated by at least one ofthe following information: information about a port set of a firstreference signal, where when a first reference signal port set includesonly one reference signal port, port information of the first referencesignal is directly notified; information about a resource index of thefirst reference signal; time-domain information corresponding to thefirst reference signal; frequency-domain information corresponding tothe first reference signal; sequence information corresponding to thefirst reference signal; information about a transmitting beam logicalnumber; information about a precoding codeword or codeword set; orinformation about a quasi-co-location relationship between thedemodulation reference signal of the control channel and a secondreference signal port.

The second reference signal port may also be at least one of a secondreference signal port set or a second reference signal resource. Thequasi-co-location relationship can be interpreted as: if two referencesignals satisfy the quasi-co-location relationship, the channelcharacteristic parameters of one reference signal may be obtained fromthe channel characteristic parameters of the two reference signals. Thechannel characteristic parameters include at least one of the followingparameters: delay spread, Doppler spread, Doppler shift, average delay,average gain, average vertical transmission angle, average horizontaltransmission angle, average vertical angle of arrival, averagehorizontal angle of arrival, central vertical transmission angle,central horizontal transmission angle, central vertical angle ofarrival, or central horizontal angle of arrival.

The first reference signal and the second reference signal are referencesignals sent by the first communication node, the first reference signaland the second reference signal are reference signals received by thefirst communication node, or the first reference signal and the secondreference signal are reference signals sent and received by the firstcommunication node.

In an embodiment, when the first reference signal and the secondreference signal are the reference signals received by the firstcommunication node, at least one of the first reference signal and thesecond reference signal indicates one of the following information:information about a sending manner used by the first communication nodeto send a signal; the information about the sending manner used by thefirst communication node to send the signal and information about areceiving manner used by a receiving end to receive the signal; theinformation about the receiving manner used by the receiving end toreceive the signal after the first communication node sends the signal;or the information about the sending manner used by the firstcommunication node to send the signal and information about a receivingmanner used by the first communication node to receive the signal.

FIG. 11 is a structure diagram of a device for receiving a controlchannel according to an embodiment. The device is applied to a secondcommunication node. As shown in FIG. 11, the device includes: a sendingunit 1101 and a receiving unit 1102.

The sending unit 1101 is configured to send at least one of firstcontrol information or first parameter information to a firstcommunication node.

The receiving unit 1102 is configured to receive the control channelsent by the first communication node according to second transmissionparameter information. The second transmission parameter information isthe second transmission parameter information for determining thecontrol channel by the first communication node according to at leastone of the first control information or the first parameter information.

Alternatively, the first parameter information includes at least one ofthe following information: demodulation reference signal informationcorresponding to the first control information, demodulation referencesignal information of a data channel corresponding to the controlchannel, type information of second control information transmitted onthe control channel, or channel coding rate information corresponding tothe first control information.

Alternatively, the first control information is sent by the secondcommunication node to the first communication node and the secondcontrol information is sent by the first communication node to thesecond communication node, where the second control information is onthe control channel.

In an embodiment, the second transmission parameter information includesat least one of the following information: information about a controlchannel region, information about frequency-domain resources occupied bythe control channel, information about time-domain symbols occupied bythe control channel, information about demodulation reference signals ofthe control channel, information about code-domain resources occupied bythe control channel, or a multiplexing manner of multiple pieces ofsecond control information.

In an embodiment, the first control information is the first controlinformation related to the data channel corresponding to the controlchannel.

The data channel and the first control information are received by thefirst communication node from the second communication node.

In an embodiment, the demodulation reference signal information includesat least one of the following information: port index information of ademodulation reference signal; or index information of sequences adoptedby the demodulation reference signal.

In an embodiment, the device further includes a means for obtainingresource information of the control channel according to thedemodulation reference signal information of the data channel and atleast one of the following information: frequency-domain resourcescorresponding to the data channel, index information corresponding tothe first control information, or time unit index informationcorresponding to the data channel.

In an embodiment, the device further includes a means for: obtaining,according to one or more minimum frequency-domain resource indexescorresponding to the data channel, a second frequency-domain resourceoccupied by the control channel; obtaining, according to one or moremaximum frequency-domain resource indexes corresponding to the datachannel, the second frequency-domain resource occupied by the controlchannel; obtaining third resource information of the control channel inthe second frequency-domain resource according to the demodulationreference signal information corresponding to the data channel.

In an embodiment, the third resource information includes at least oneof the following information: a time-frequency resource group index ofthe control channel in the second frequency-domain resource, wherein thesecond frequency-domain resource includes multiple time-frequencyresource groups; a code-domain resource index of the control channel inthe second frequency-domain resource; or demodulation reference signalresource information corresponding to the control channel.

In an embodiment, the device further includes a means for obtainingthird transmission parameter information of the control channelaccording to the demodulation reference signal information correspondingto the first control information and index information corresponding tothe first control information.

In an embodiment, the third transmission parameter information includesat least one of the following resource information: a time-domainresource corresponding to the control channel, the frequency-domainresource corresponding to the control channel, a code resourcecorresponding to the control channel, or a time-frequency-code resourcecorresponding to a demodulation reference signal of the control channel.

In an embodiment, the device further includes a means for: receivinganother signal according to the information about the control channelregion; or when a frequency-domain resource allocated for another signalin a current time unit intersects with a frequency-domain resource wherethe control channel region is located, not receiving the another signalon the control channel region; wherein the another signal includes atleast one of the following signals: a data channel signal, a measurementreference signal, a demodulation reference signal, an access requestsignal and a scheduling request signal; or a resource occupied by thecontrol channel being a subset of resources occupied by the controlchannel region, where the control channel region may also be referred toas a control channel resource set. One control channel resource may beat least one of the following resources: a time-domain resource, afrequency-domain resource and a code-domain resource. In addition, theresources occupied by the control channel in the control channel regionmay be notified by a dynamic signaling.

In an embodiment, the information about the control channel regionincludes at least one of the following information: the number ofsub-regions included in the control channel region, information aboutfrequency-domain resources of each of the sub-regions, or informationabout the number of time-domain symbols corresponding to each of thesub-regions.

In an embodiment, the control channel region satisfies one of thefollowing features: the control channel region occupies two sides of apredetermined bandwidth; on an upper side of the predeterminedbandwidth, the greater a number of time-domain symbols corresponding toa sub-region is, the higher an occupied frequency-domain position is,wherein the higher the frequency-domain position is, the greater anumber of a subcarrier at which the sub-region is located is; on a lowerside of the predetermined bandwidth, the greater the number of thesymbols corresponding to the sub-region is, the lower the occupiedfrequency-domain position is, wherein the lower the frequency-domainposition is, the smaller a number of a subcarrier at which thesub-region is located is; when the sub-region includes N time-domainsymbols, an ending symbol of the N time-domain symbols is an endingsymbol of a second transmission domain; and when the sub-region includesthe N time-domain symbols, a starting symbol of the N time-domainsymbols is a starting time-domain symbol of the second transmissiondomain. The second transmission domain corresponds to a signal receivingregion of the second communication node.

In an embodiment, indication information which is in the first controlinformation and indicates information about a number of time-domainsymbols of the control channel includes at least one of the followinginformation: whether a duration of the control channel is a longduration or a short duration; a starting symbol index of the controlchannel; an ending symbol index of the control channel; the number ofthe time-domain symbols of the control channel; or an index of thenumber of the time-domain symbols of the control channel in an agreedset of numbers of time-domain symbols.

In an embodiment, when obtaining that a duration of the control channelis a long duration, a number of time-domain symbols of the controlchannel is equal to a number of time-domain symbols of a correspondingtransmission domain, wherein the corresponding transmission domain andthe control channel have a same transmission direction.

In an embodiment, the control channels with the long duration indifferent time units correspond to different numbers of time-domainsymbols.

In an embodiment, the device further includes a means for performing atleast one of the following: determining information about a number oftime-domain symbols occupied by the control channel or information abouta number of frequency domains of the control channel according to a typeof the second control information transmitted on the control channel;determining the information about the number of the time-domain symbolsof the control channel or the information about the number of thefrequency domains of the control channel according to information abouta channel quality level or a capability level fed back by the firstcommunication node, where the first communication node feeds back thecapability level information or the channel quality level information tothe second communication node; determining the information about thenumber of the time-domain symbols occupied by the control channel or theinformation about the number of the frequency domains of the controlchannel according to a channel coding rate corresponding to the firstcontrol information; determining the information about the number of thetime-domain symbols occupied by the control channel or the informationabout the number of the frequency domains of the control channelaccording to a channel coding rate of a first data channel correspondingto the second control information; or determining the information aboutthe number of the time-domain symbols occupied by the control channel orthe information about the number of the frequency domains of the controlchannel according to a channel coding rate of a second data channel.

Different types of the control channel are distinguished from each otherby at least one of the following information: whether the second controlinformation is CSI information or ACK/NACK information, an informationlength of the second control information, the first data channel beingsent by the second communication node to the first communication node,the second data channel being a data channel sent by the firstcommunication node to the second communication node in a current timeunit, or the current time unit being a time unit where the controlchannel is located.

In an embodiment, multiple pieces of second control information havingthe same number of time-domain symbols are sent receiving on one controlchannel; and multiple pieces of second control information of the sametype are sent receiving on one control channel.

The different types of second control information are distinguished fromeach other by at least one of the following information: whether thesecond control information is CSI information or ACK/NACK information,an information length of the second control information, or a servicetype of the data corresponding to the second control information. Themultiple pieces of second control information are the multiple pieces ofsecond control information needed to be received in a current time unit.

In an embodiment, the device further includes a means for performing atleast one of the following: when multiple pieces of second controlinformation needed to be received in a current time unit are sent on onecontrol channel, obtaining resource information of the control channelaccording to first control information corresponding to a highest timeunit index among multiple pieces of first control information related tothe multiple pieces of second control information; or when the multiplepieces of second control information needed to be received in thecurrent time unit are sent on the one control channel, obtaining theresource information of the control channel according to control channelresource information corresponding to the multiple pieces of secondcontrol information.

In an embodiment, a time-frequency-domain position of a demodulationreference signal of the control channel is obtained in one of thefollowing manners: whether the demodulation reference signal is on astarting symbol or an ending symbol of the control channel is obtainedaccording to the first control information; whether frequency-domainresources occupied by the demodulation reference signal in onetime-domain symbol are continuous or discrete is indicated according tothe first control information; parameters related to the demodulationreference signal are determined according to information about a numberof time-domain symbols of the control channel; the parameters related tothe demodulation reference signal are determined according to whetherthe control channel and a second data channel are allowed to be in codedivision multiplexing mode; the parameters related to the demodulationreference signal are determined according to a number of sending mannersets; and the parameters related to the demodulation reference signalare determined according to a sending mode of the control channel, wherethe sending mode includes a single-layer transmission, a transmissiondiversity mode and a repeated transmission.

The second data channel is a data channel sent by the firstcommunication node to the second communication node or by a thirdcommunication node to the second communication node.

In an embodiment, the first control information satisfies at least oneof the following features: the first control information is high-layersemi-static control information, or the first control information isphysical-layer dynamic control information.

In an embodiment, frequency-domain resource information of the controlchannel is obtained in the following manner: physical-layer dynamicinformation to notify the frequency-domain resource.

Alternatively, the frequency domain resource may occupy any one or morefrequency-domain resources within a predetermined bandwidth. In anexemplary embodiment, one frequency-domain resource is one PRB, onesub-band, one CCE or one REG

In an embodiment, a resource occupied by the control channel satisfiesthe following feature: obtaining an ending time-domain symbol positionand a starting frequency-domain resource corresponding to the controlchannel, as well as information about a number of resource elements ofthe control channel; and for the multiple resource elements of thecontrol channel, first mapping in a frequency domain and then mapping ina time domain.

In an embodiment, the first parameter information further includes indexinformation of a time unit at which the data channel or the firstcontrol information is located.

In an embodiment, time resource information of one of the data channeland the first control information includes at least one of the followinginformation: index information of a time unit at which the data channelor the first control information is located; index information of atime-domain symbol at which the data channel or the first controlinformation is located; index information of a time unit at which atime-domain ending position of one of the data channel or the firstcontrol information is located; or index information of a time-domainsymbol at which the time-domain ending position of one of the datachannel or the first control information is located.

In an embodiment, demodulation reference signal resource information ofthe second control information is determined according to CSIinformation in the first control information.

In an embodiment, CSI information fed back by the first communicationnode includes a transmission resource corresponding to the firstcommunication node. The transmission resource includes one or more ofthe following types of resources: a transmitting beam resource, atransmission port resource, a transmission precoding matrix resource, atransmission time resource, a transmission frequency-domain resource anda transmission sequence resource.

In an embodiment, the first control information satisfies that at leastone of the followings. The first control information is common controlinformation, where the common control information may be a group commonphysical downlink control channel. The first control informationincludes information that notifies a control channel resource set of acurrent time unit. The first control information includes informationthat notifies a sending sequence of multiple sending manners used by thefirst communication node to send the control channel. The first controlinformation includes information that notifies a correspondence betweentime-domain regions of the control channel and the multiple sendingmanners or sending manner sets used to send the control channel. Thefirst control information includes at least one of information fornotifying time-domain resource corresponding to each sending manner inthe multiple sending manners or information for notifyingfrequency-domain resource corresponding to each sending manner in themultiple sending manners, wherein the multiple sending manners are usedby the first communication node to send the control channel; the firstcontrol information includes at least one of information for notifyingtime-domain resource corresponding to each sending manner set in themultiple sending manner sets or information for notifyingfrequency-domain resource corresponding to each sending manner set inthe multiple sending manner sets, wherein the multiple sending mannersets are used by the first communication node to send the controlchannel. The first control information includes information thatnotifies a sending manner used by the first communication node to sendthe control channel, where information about the sending manners mayalso be referred to as beam information or precoding information. Thefirst control information includes information that notifies a controlchannel format used by the first communication node to send the controlchannel, where different control channels are distinguished from eachother in at least one of the following manners: a frequency-domainspreading manner, a time-domain spreading manner, information about themaximum number of bits that can be transmitted, or a multiplexing mannerof multiple pieces of second control information. The first controlinformation includes information that notifies a modulation manner usedby the first communication node to send the control channel. The firstcontrol information includes information that notifies a coding rateused by the first communication node to send the control channel.

In an embodiment, the receiving unit 1102 is further configured to:detect, on all resource sets of the control channel resource set, thecontrol channel sent by the first communication node; and detect, on asubset of the control channel resource set according to a predeterminedrule, the control channel sent by the first communication node. Thepredetermined rule is identification information of the firstcommunication node.

In an embodiment, the sending manners are indicated by at least one ofthe following information: information about a port set of a firstreference signal, where port information of the first reference signalis directly notified when a first reference signal port set includesonly one reference signal port; information about a resource index ofthe first reference signal; time-domain information corresponding to thefirst reference signal; frequency-domain information corresponding tothe first reference signal; sequence information corresponding to thefirst reference signal; information about a transmitting beam logicalnumber; information about a precoding codeword or codeword set; orinformation about a quasi-co-location relationship between thedemodulation reference signal of the control channel and a secondreference signal port.

The second reference signal port may also be at least one of a secondreference signal port set or a second reference signal resource. Thequasi-co-location relationship can be interpreted as: if two referencesignals satisfy the quasi-co-location relationship, the channelcharacteristic parameters of one reference signal can be obtained fromthe channel characteristic parameters of the two reference signals. Thechannel characteristic parameters include at least one of the followingparameters: delay spread, Doppler spread, Doppler shift, average delay,average gain, average vertical transmission angle, average horizontaltransmission angle, average vertical angle of arrival, averagehorizontal angle of arrival, central vertical transmission angle,central horizontal transmission angle, central vertical angle ofarrival, or central horizontal angle of arrival.

The first reference signal and the second reference signal are referencesignals sent by the first communication node, the first reference signaland the second reference signal are reference signals received by thefirst communication node, or the first reference signal and the secondreference signal are reference signals sent and received by the firstcommunication node.

In an embodiment, when the first reference signal and the secondreference signal are the reference signals received by the firstcommunication node, at least one of the first reference signal or thesecond reference signal indicates one of the following information:information about a sending manner used by the first communication nodeto send a signal; the information about the sending manner used by thefirst communication node to send the signal and information about areceiving manner used by a receiving end to receive the signal; theinformation about the receiving manner used by the receiving end toreceive the signal after the first communication node sends the signal;or the information about the sending manner used by the firstcommunication node to send the signal and information about a receivingmanner used by the first communication node to receive the signal.

FIG. 13 is flowchart one of a method for determining a sending manner ofa control channel according to an embodiment. As shown in FIG. 13, themethod for determining a sending manner of a control channel includesthe steps described below.

In step 1301, a first communication node determines the sending mannerof the control channel according to a sending manner of a data channel.

In step 1302, the first communication node sends the control channel toa second communication node according to the determined sending manner.

In an embodiment, the sending manner is distinguished from another by atleast one of the following features: a frequency-domain resource onwhich a reference signal is located, a time-domain resource on which thereference signal is located, a sequence resource used by the referencesignal, a beam resource used by the reference signal, a precoding matrixresource used by the reference signal, an index of the reference signalresource on which the reference signal is located, or aquasi-co-location relationship between reference signals. Thequasi-co-location relationship can be interpreted as: if two referencesignals satisfy the quasi-co-location relationship, the channelcharacteristic parameters of one reference signal may be obtained fromthe channel characteristic parameters of the two reference signals. Thechannel characteristic parameters include at least one of the followingparameters: delay spread, Doppler spread, Doppler shift, average delay,average gain, average vertical transmission angle, average horizontaltransmission angle, average vertical angle of arrival, averagehorizontal angle of arrival, central vertical transmission angle,central horizontal transmission angle, central vertical angle ofarrival, or central horizontal angle of arrival.

The reference signal is sent by the first communication node or thereference signal is received by the first communication node, or thereference signal is sent and received by the first communication node.

In an embodiment, determining the sending manner of the control channelsatisfies at least one of the following features: determining thesending manner of the control channel according to the sending manner ofthe data channel when a sending time interval between the controlchannel and the data channel is less than a predetermined threshold;keeping the sending manner of the control channel unchanged until a newnotification signaling is received after changing the sending manner ofthe control channel according to the sending manner of the data channel;determining the sending manner of a third type of control channelaccording to the sending manner of a fourth type of control channel whena sending time interval between the third type of control channel andthe fourth type of control channel is less than a predeterminedthreshold; keeping the sending manner of the third type of controlchannel unchanged until a new notification signaling is received afterchanging the sending manner of the third type of control channelaccording to the sending manner of the fourth type of control channel;changing the sending manner of the control channel according to thesending manner of the data channel when the control channel belongs to afirst type of control channel; not changing the sending manner of thecontrol channel according to the sending manner of the data channel whenthe control channel belongs to a second type of control channel;receiving signaling information sent by the second communication node,and determining, according to the signaling information, whether thesending manner of the control channel changes according to the sendingmanner of the data channel; receiving the signaling information sent bythe second communication node, and determining, according to thesignaling information, whether the sending manner of the third type ofcontrol channel changes according to the sending manner of the fourthtype of control channel; or changing in only one time window the sendingmanner of the control channel according to the sending manner of thedata channel or the sending manner of the fourth type of controlchannel, and restoring the sending manner of the control channel to anoriginal sending manner outside the time window.

In an embodiment, different types of control channels are distinguishedfrom each other by at least one of the following features: a type ofcontrol information carried by the control channel; the number oftime-domain symbols occupied by the control channel; the number offrequency-domain resources used by the control channel; the number ofsending manners used by the control channel; or the number of sendingmanner sets used by the control channel.

FIG. 14 is flowchart two of a method for determining a sending manner ofa control channel according to an embodiment. As shown in FIG. 14, themethod for determining a sending manner of a control channel includesthe steps described below.

In step 1401, a first communication node determines a sending manner ofa third type of control channel according to a sending manner of afourth type of control channel.

In step 1402, the first communication node sends the third type ofcontrol channel to the second communication node according to thedetermined sending manner.

In an embodiment, the sending manner is distinguished from another by atleast one of the following features: a frequency-domain resource onwhich a reference signal is located, a time-domain resource on which thereference signal is located, a sequence resource used by the referencesignal, a beam resource used by the reference signal, a precoding matrixresource used by the reference signal, an index of the reference signalresource on which the reference signal is located, or aquasi-co-location relationship between reference signals. Thequasi-co-location relationship can be interpreted as: if two referencesignals satisfy the quasi-co-location relationship, the channelcharacteristic parameters of one reference signal may be obtained fromthe channel characteristic parameters of the two reference signals. Thechannel characteristic parameters include at least one of the followingparameters: delay spread, Doppler spread, Doppler shift, average delay,average gain, average vertical transmission angle, average horizontaltransmission angle, average vertical angle of arrival, averagehorizontal angle of arrival, central vertical transmission angle,central horizontal transmission angle, central vertical angle ofarrival, or central horizontal angle of arrival.

The reference signal is sent by the first communication node or thereference signal is received by the first communication node, or thereference signal is sent and received by the first communication node.

In an embodiment, determining the sending manner of the control channelsatisfies at least one of the following features: determining thesending manner of the control channel according to the sending manner ofthe data channel when a sending time interval between the controlchannel and the data channel is less than a predetermined threshold;keeping the sending manner of the control channel unchanged until a newnotification signaling is received after changing the sending manner ofthe control channel according to the sending manner of the data channel;determining the sending manner of a third type of control channelaccording to the sending manner of a fourth type of control channel whena sending time interval between the third type of control channel andthe fourth type of control channel is less than a predeterminedthreshold; keeping the sending manner of the third type of controlchannel unchanged until a new notification signaling is received afterchanging the sending manner of the third type of control channelaccording to the sending manner of the fourth type of control channel;changing the sending manner of the control channel according to thesending manner of the data channel when the control channel belongs to afirst type of control channel; not changing the sending manner of thecontrol channel according to the sending manner of the data channel whenthe control channel belongs to a second type of control channel;receiving signaling information sent by the second communication node,and determining, according to the signaling information, whether thesending manner of the control channel changes according to the sendingmanner of the data channel; receiving the signaling information sent bythe second communication node, and determining, according to thesignaling information, whether the sending manner of the third type ofcontrol channel changes according to the sending manner of the fourthtype of control channel; or changing in only one time window the sendingmanner of the control channel according to the sending manner of thedata channel or the sending manner of the fourth type of controlchannel, and restoring the sending manner of the control channel to anoriginal sending manner outside the time window.

In an embodiment, different types of control channels are distinguishedfrom each other by at least one of the following features: a type ofcontrol information carried by the control channel; the number oftime-domain symbols occupied by the control channel; the number offrequency-domain resources used by the control channel; the number ofsending manners used by the control channel; or the number of sendingmanner sets used by the control channel.

FIG. 15 is a flowchart of a method for determining a receiving manner ofa control channel according to an embodiment. As shown in FIG. 15, themethod for determining a receiving manner of a control channel includesthe steps described below.

In step 1501, a second communication node receives, according to thedetermined receiving manner, the control channel sent by a firstcommunication node.

The determined receiving manner is determined according to a receivingmanner used to receive a data channel sent by the first communicationnode or according to a receiving manner used to receive a fourth type ofcontrol channel sent by the first communication node.

In an embodiment, the determined receiving manner is distinguished fromanother by at least one of the following features: a frequency-domainresource on which a reference signal is located, a time-domain resourceon which the reference signal is located, a sequence resource used bythe reference signal, a beam resource used by the reference signal, aprecoding matrix resource used by the reference signal, an index of thereference signal resource on which the reference signal is located, or aquasi-co-location relationship between reference signals.

The reference signal is sent by the first communication node or thereference signal is received by the first communication node, or thereference signal is sent and received by the first communication node.

In an embodiment, the determined receiving manner satisfies at least oneof the following features: determining the receiving manner of thecontrol channel according to the receiving manner of the data channelwhen a sending time interval between the control channel and the datachannel is less than a predetermined threshold; keeping the receivingmanner of the control channel unchanged until a new notificationsignaling is received after changing the receiving manner of the controlchannel according to the receiving manner of the data channel;determining the receiving manner of the control channel according to thereceiving manner of a fourth type of control channel when a sending timeinterval between the control channel and the fourth type of controlchannel is less than a predetermined threshold; keeping the receivingmanner of the control channel unchanged until a new notificationsignaling is received after changing the receiving manner of the controlchannel according to the receiving manner of the fourth type of controlchannel; changing the receiving manner of the control channel accordingto the receiving manner of the data channel when the control channelbelongs to a first type of control channel; changing the receivingmanner of the control channel according to the receiving manner of thedata channel when the control channel belongs to a third type of controlchannel; or not changing the receiving manner of the control channelaccording to the receiving manner of the data channel when the controlchannel belongs to a second type of control channel.

In an embodiment, different types of control channels are distinguishedfrom each other by at least one of the following features: a type ofcontrol information carried by the control channel; the number oftime-domain symbols occupied by the control channel; the number offrequency-domain resources used by the control channel; the number ofsending manners used by the control channel; or the number of sendingmanner sets used by the control channel.

In step 1502, the second communication node sends signaling informationto the first communication node.

The signaling information includes at least one of the followinginformation: information about whether the receiving manner of thecontrol channel changes according to the receiving manner of the datachannel; information about whether the receiving manner of the controlchannel changes according to the receiving manner of the fourth type ofcontrol channel; information about whether the sending manner of thecontrol channel changes according to the sending manner of the datachannel; or information about whether the sending manner of the controlchannel changes according to the sending manner of the fourth type ofcontrol channel.

The receiving manner of the control channel changes according to thereceiving manner of the data channel or the receiving manner of thefourth type of control channel in only one time window and restores thereceiving manner of the control channel to an original receiving manneroutside the time window.

Embodiment Twenty

In the embodiment, the sending manner used by the terminal to send thecontrol channel is determined according to the following information:the sending manner used by the terminal to send the data channel.Different sending manners are distinguished from each other by at leastone of the following information: a transmitting beam, port informationof a measurement reference signal, a time-domain resource where themeasurement reference signal is located, a frequency-domain resourcewhere the measurement reference signal is located, a sequence resourceused by the measurement reference signal, or a beam resource used by themeasurement reference signal. For example, the sending manners arelogically numbered by at least one of the above information. In theembodiment, the sending manner may also be determined by establishing ofa quasi-co-location (QCL) relationship between different referencesignals. For example, it is indicated that the sending manner used bythe terminal is determined according to a port of a measurementreference signal, that is, it is established that a demodulationreference signal of the control channel and the measurement referencesignal have a quasi-co-location relationship. The measurement referencesignal may be a downlink measurement reference signal, then areciprocity is used to obtain a transmitting beam of the controlchannel. The measurement reference signal may also be an uplinkmeasurement reference signal, then the transmitting beam of the controlchannel is obtained according to a transmit beam of the uplinkmeasurement reference signal or a receiving beam of the downlinkreference signal.

The sending manner used by the data channel may be notified to theterminal in at least one of the following manners: the base stationnotifies, in first control information, codebook index information usedby the data channel; the base station notifies, in the first controlinformation, port information of a first reference signal (where theport information of the first reference signal may also be at least oneof resource information of the first reference signal or first referencesignal set information) and the terminal obtains information about thesending manner for sending the data channel according to the portinformation of the first reference signal; in the first controlinformation, it is notified that the demodulation reference signal ofthe data channel and a port of a second reference signal (where the portof the second reference signal may also be at least one of a port set ofthe second reference signal or a resource of the second referencesignal) have a quasi-co-location relationship. The quasi-co-locationrelationship can be interpreted as: if two reference signals satisfy thequasi-co-location relationship, the channel characteristic parameters ofone reference signal may be obtained from the channel characteristicparameters of the other reference signals. The channel characteristicparameters include at least one of the following parameters: delayspread, Doppler spread, Doppler shift, average delay, average gain,average vertical angle of transmission, average horizontal angle oftransmission, average vertical angle of arrival, average horizontalangle of arrival, central vertical angle of transmission, centralhorizontal angle of transmission, central vertical angle of arrival, orcentral horizontal angle of arrival.

A first reference signal and a second reference signal satisfy one ofthe following:

the first reference signal and the second reference signal are sent bythe terminal to a second communication node before (that is, the firstreference signal and the second reference signal are sent to the secondcommunication node before a first communication node receives at leastone of the first control information or first parameter information),and

the first reference signal and the second reference signal are sent bythe base station to the first communication node before (that is, thefirst reference signal and the second reference signal are sent to thefirst communication node before the second communication node sends atleast one of the first control information or the first parameterinformation).

Embodiment Twenty-One

In the embodiment, the terminal determines the sending manner of thefirst type of control channel according to the sending manner of thedata channel, but the sending manner of the second type of controlchannel does not change according to the sending manner of the datachannel.

The distinction between the first type of control channel and the secondtype of control channel includes at least one of the following features:the types of the carried second control information are different (forexample, ACK/NACK, CSI, beam recovery request, resource request, and forexample, carrying ACK/NACK in the second type of control channel andcarrying CSI in the first type of control channel); or the numbers ofsending manners (or sending manner sets) of the control channel aredifferent. For example, the number of sending manner sets of the firsttype of control channel is 1, and the number of sending manners of thefirst type of control channel is greater than 1. For example, the basestation notifies, in the third signaling information, that the sendingmanner used by the first type of control channel is manner 1 (explicitor implicit as transmitting beam 1), and the base station furthernotifies the terminal, in the fourth signaling information, that thesending manner of the data channel is manner 2 (explicit or implicit astransmitting beam 2), then the sending manner used by the terminal tosend the first type of control channel is manner 2. In an exemplaryembodiment, the sending time of the third signaling information is notlater than the sending time of the fourth signaling information.

The time interval between the first type of control channel and the datachannel sent by the terminal is not greater than a predeterminedthreshold, where the predetermined threshold may be zero. When thesending time interval between the first type of control channel and thedata channel is greater than the predetermined threshold, the sendingmanner of the first type of control channel is restored to an originalsending manner of the first type of control channel. For example, thethird signaling information is valid in slot n, and the fourth signalinginformation is valid in slot n+k, where k is an integer. The datachannel is sent in slot n+k, then, if the first type of control channelfalls into slot n+k−offset to slot n+k+offset (where offset is aninteger, or falls into slot n+k to slot n+k+offset), then the sendingmanner of the first type of control channel is the manner 2 (the sendingmanner notified by the data channel). Moreover, if the first type ofcontrol channel falls outside slot n+k−offset to slot n+k+offset, thenthe sending manner of the first type of control channel is the manner 1(the original sending manner of the first type of control channel). Inthe embodiment, the example region uses the level of slot. The exampleregion may also use the level of the time-domain symbol.

Alternatively, after the sending manner of the first type of controlchannel changes according to the sending manner of the data channel, thesending manner does not change to the original sending manner of thecontrol channel until a new signaling notification is received.

Different sending manners are distinguished from each other according toat least one of the following information: a transmitting beam or firstreference signal information corresponding to a demodulation referencesignal of the control channel. The demodulation reference signal of thecontrol channel and the first reference signal satisfy aquasi-co-location relationship with respect to a channel characteristicparameter. The first reference signal includes at least one of thefollowing information of the first reference signal: port setinformation of the first reference signal, resource index information ofthe first reference signal, time-domain information of the firstreference signal, frequency-domain information of the first referencesignal, or sequence information of the first reference signal. When aport set of the first reference signal includes only one referencesignal port, the port information of the first reference signal isdirectly notified.

Embodiment Twenty-Two

In the embodiment, the sending manner of the third type of controlchannel is determined according to the sending manner of the fourth typeof control channel.

Different types of control channels are distinguished from each other byat least one of the following features: the types of the carried secondcontrol information are different (for example, ACK/NACK, CSI, beamrecovery request, resource request, and for example, carrying ACK/NACKin the fourth type of control channel and carrying CSI in the third typeof control channel); or the numbers of sending manners (or sendingmanner sets) of the control channel are different. For example, thenumber of sending manner sets of the third type of control channel is 1,and the number of sending manners of the fourth type of control channelis greater than 1. For example, the base station notifies, in the thirdsignaling information, that the sending manner used by the third type ofcontrol channel is manner 1 (explicit or implicit as transmitting beam1), and the base station further notifies the terminal, in the fourthsignaling information, that the sending manner for sending the fourthtype of control channel is manner 2 (explicit or implicit astransmitting beam 2), then the sending manner used by the terminal tosend the third type of control channel is manner 2. In an exemplaryembodiment, the sending time of the third signaling information is notlater than the sending time of the fourth signaling information.

Similar to embodiment twenty-one, one manner is that only if the sendingregion of the third type of control channel falls within the agreedregion, the sending manner of the third type of control channel changesaccording to the fourth type of control channel, and if the sendingregion of the third type of control channel is outside the agreedregion, the sending manner of the third type of control channel isupdated to the original sending manner of the third type of controlchannel.

Another sending manner is that: after changing according to the sendingmanner of the fourth type of control channel, the sending manner of thethird type of control channel keeps unchanged until a new signalingnotification is received.

Different sending manners are distinguished from each other according toat least one of the following information: a transmitting beam or firstreference signal information corresponding to a demodulation referencesignal of the control channel. The demodulation reference signal of thecontrol channel and the first reference signal satisfy aquasi-co-location relationship with respect to a channel characteristicparameter. The first reference signal includes at least one of thefollowing information of the first reference signal: port setinformation of the first reference signal, resource index information ofthe first reference signal, time-domain information of the firstreference signal, frequency-domain information of the first referencesignal, or sequence information of the first reference signal. When aport set of the first reference signal includes only one referencesignal port, port information of the first reference signal is directlynotified.

The sending manner of the uplink control channel in the aboveembodiments may also be used to send the downlink control channel.

FIG. 16 is a structure diagram of a first determining device fordetermining a sending manner of a control channel according to anembodiment. The device is applied to a first communication node. Asshown in FIG. 16, the first determining device includes: a determiningunit 1601 and a sending unit 1602.

The determining unit 1601 is configured to determine the sending mannerof the control channel according to a sending manner of a data channelor determine a sending manner of a third type of control channelaccording to a sending manner of a fourth type of control channel.

The sending unit 1602 is configured to send the control channel to asecond communication node according to the determined sending manner orsend the third type of control channel to the second communication nodeaccording to the determined sending manner.

In an embodiment, the sending manner is distinguished from another by atleast one of the following features: a frequency-domain resource onwhich a reference signal is located, a time-domain resource on which thereference signal is located, a sequence resource used by the referencesignal, a beam resource used by the reference signal, a precoding matrixresource used by the reference signal, an index of the reference signalresource on which the reference signal is located, or aquasi-co-location relationship between reference signals.

The reference signal is sent by the first communication node or thereference signal is received by the first communication node, or thereference signal is sent and received by the first communication node.

In an embodiment, determining the sending manner of the control channelsatisfies at least one of the following features: determining thesending manner of the control channel according to the sending manner ofthe data channel when a sending time interval between the controlchannel and the data channel is less than a predetermined threshold;keeping the sending manner of the control channel unchanged until a newnotification signaling is received after changing the sending manner ofthe control channel according to the sending manner of the data channel;determining the sending manner of a third type of control channelaccording to the sending manner of a fourth type of control channel whena sending time interval between the third type of control channel andthe fourth type of control channel is less than a predeterminedthreshold; keeping the sending manner of the third type of controlchannel unchanged until a new notification signaling is received afterchanging the sending manner of the third type of control channelaccording to the sending manner of the fourth type of control channel;changing the sending manner of the control channel according to thesending manner of the data channel when the control channel belongs to afirst type of control channel; not changing the sending manner of thecontrol channel according to the sending manner of the data channel whenthe control channel belongs to a second type of control channel;receiving signaling information sent by the second communication node,and determining, according to the signaling information, whether thesending manner of the control channel changes according to the sendingmanner of the data channel; receiving the signaling information sent bythe second communication node, and determining, according to thesignaling information, whether the sending manner of the third type ofcontrol channel changes according to the sending manner of the fourthtype of control channel; or changing in only one time window the sendingmanner of the control channel according to the sending manner of thedata channel or the sending manner of the fourth type of controlchannel, and restoring the sending manner of the control channel to anoriginal sending manner outside the time window.

In an embodiment, different types of control channels are distinguishedfrom each other by at least one of the following features: a type ofcontrol information carried by the control channel; the number oftime-domain symbols occupied by the control channel; the number offrequency-domain resources used by the control channel; the number ofsending manners used by the control channel; or the number of sendingmanner sets used by the control channel.

FIG. 17 is a structure diagram of a second determining device fordetermining a receiving manner of a control channel according to anembodiment. The device is applied to a second communication node. Asshown in FIG. 17, the second determining device includes: a receivingunit 1701.

The receiving unit 1701 is configured to receive, according to thedetermined receiving manner, the control channel sent by a firstcommunication node. The determined receiving manner is determinedaccording to a receiving manner used to receive a data channel sent bythe first communication node or according to a receiving manner used toreceive a fourth type of control channel sent by the first communicationnode.

In an embodiment, the determined receiving manner is distinguished fromanother by at least one of the following features: a frequency-domainresource on which a reference signal is located, a time-domain resourceon which the reference signal is located, a sequence resource used bythe reference signal, a beam resource used by the reference signal, aprecoding matrix resource used by the reference signal, an index of thereference signal resource on which the reference signal is located, or aquasi-co-location relationship between reference signals.

The reference signal is sent by the first communication node or thereference signal is received by the first communication node, or thereference signal is sent and received by the first communication node.

In an embodiment, the determined receiving manner satisfies at least oneof the following features: determining the receiving manner of thecontrol channel according to the receiving manner of the data channelwhen a sending time interval between the control channel and the datachannel is less than a predetermined threshold; keeping the receivingmanner of the control channel unchanged until a new notificationsignaling is received after changing the receiving manner of the controlchannel according to the receiving manner of the data channel;determining the receiving manner of the control channel according to thereceiving manner of a fourth type of control channel when a sending timeinterval between the control channel and the fourth type of controlchannel is less than a predetermined threshold; keeping the receivingmanner of the control channel unchanged until a new notificationsignaling is received after changing the receiving manner of the controlchannel according to the receiving manner of the fourth type of controlchannel; changing the receiving manner of the control channel accordingto the receiving manner of the data channel when the control channelbelongs to a first type of control channel; changing the receivingmanner of the control channel according to the receiving manner of thedata channel when the control channel belongs to a third type of controlchannel; or not changing the receiving manner of the control channelaccording to the receiving manner of the data channel when the controlchannel belongs to a second type of control channel.

In an embodiment, different types of control channels are distinguishedfrom each other by at least one of the following features: a type ofcontrol information carried by the control channel; the number oftime-domain symbols occupied by the control channel; the number offrequency-domain resources used by the control channel; the number ofsending manners used by the control channel; or the number of sendingmanner sets used by the control channel.

In an embodiment, the second determining device further includes: asending unit 1702.

The sending unit 1702 is configured to send signaling information to thefirst communication node. The signaling information includes at leastone of the following information: information about whether thereceiving manner of the control channel changes according to thereceiving manner of the data channel; information about whether thereceiving manner of the control channel changes according to thereceiving manner of the fourth type of control channel; informationabout whether the sending manner of the control channel changesaccording to the sending manner of the data channel; or informationabout whether the sending manner of the control channel changesaccording to the sending manner of the fourth type of control channel.

The receiving manner of the control channel changes according to thereceiving manner of the data channel or the receiving manner of thefourth type of control channel in only one time window and restores thereceiving manner of the control channel to an original receiving manneroutside the time window.

The above described embodiments may be provided as a method, a system,or a computer program product. The preceding embodiments may beimplemented by software, hardware or a combination of the two. Thepreceding embodiments may take the form of a computer program productimplemented in one or more computer-usable storage media (including adisk memory and an optical memory) that includes computer-usable programcodes.

Computer program instructions can be used to implement each flow in theflowcharts or each block in the block diagrams, or a combination of theflows and blocks in the flowcharts and block diagrams. These computerprogram instructions may be provided into the processor of ageneral-purpose computer, special purpose computer, embedded processoror another programmable data processing device to produce a machine, soas to enable instructions executed by the processor of a computer or theother programmable data processing device to generate a device forimplementing at least one of one or more flows in the flowcharts and oneor more blocks in the block diagrams.

The computer program instructions may also be stored in acomputer-readable memory that can direct a computer or the otherprogrammable data processing device to operate in a particular manner,so that the instructions stored in the computer-readable memory producean article of manufacture including an instruction device. Theinstruction device implements at least one of one or more flows in theflowcharts and one or more blocks in the block diagrams, where the blockincludes functions specified in the one or more blocks.

These computer program instructions may also be loaded onto a computeror the other programmable data processing device, so that a series ofoperating steps are performed on a computer or the other programmabledevice to carry out processing implemented by the computer, and theinstructions executed on the computer or the other programmable deviceprovide steps for implementing the functions specified in at least oneof the flows or blocks.

An embodiment provides a computer-readable storage medium configured tostore computer-executable instructions for executing the method in anyabove embodiment.

An embodiment provides a schematic diagram illustrating a hardwarestructure of an electronic device. Referring to FIG. 18, the electronicdevice includes: at least one processor 1800 (FIG. 18 shows oneprocessor 1800 by way of example) and a memory 1801; and may furtherinclude a communication interface 1802 and a bus 1803. The processor1800, the memory 1801 and the communication interface 1802 maycommunicate with each other through the bus 1803. The processor 1800 maycall logic instructions in the memory 1801 to perform the method in anypreceding embodiment.

In addition, the logic instructions in the memory 1801 may beimplemented in the form of a software function unit and, when sold orused as an independent product, may be stored in a computer-readablestorage medium.

As a computer-readable storage medium, the memory 1801 may be used forstoring software programs and computer-executable programs, such asprogram instructions or modules corresponding to the method in anypreceding embodiment. The processor 1800 runs the software programs,instructions or modules stored in the memory 1801 to perform functionapplications and data processing, that is, to implement the method inany preceding embodiment.

The memory 1801 may include a program storage region and a data storageregion, where the program storage region may store an operating systemand an application program required by at least one function while thedata storage region may store data created depending on use of aterminal device. In addition, the memory 1801 may include a high-speedrandom-access memory and may further include a non-volatile memory.

The preceding technical solutions may be embodied in the form of asoftware product that is stored in a storage medium and includes one ormore instructions for enabling a computer device (which may be apersonal computer, server, or network device, etc.) to perform all orpart of the steps of the method in any preceding embodiment. Thepreceding storage medium may be a non-transient storage medium, such asa U disk, mobile hard disk, read only memory (ROM), random access memory(RAM), magnetic disk, optical disk or another medium that can storeprogram codes, or may be a transient storage medium.

What is claimed is:
 1. A method for sending a control channel,comprising: determining, by a first communication node, secondtransmission parameter information about the control channel accordingto first parameter information and sending the control channel to asecond communication node according to the second transmission parameterinformation; wherein the first parameter information comprises at leastone of the following information: an information length of secondcontrol information transmitted on the control channel, or indexinformation of a time-domain symbol at which first control informationcorresponding to the control channel is located, and wherein the firstcontrol information is sent by the second communication node to thefirst communication node, the second control information is sent by thefirst communication node to the second communication node, and thesecond control information is on the control channel; wherein the secondtransmission parameter information comprises at least one of thefollowing information: information about a control channel region,information about frequency-domain resources occupied by the controlchannel, information about demodulation reference signals of the controlchannel, or information about code-domain resources occupied by thecontrol channel; wherein the information about the control channelregion comprises: a number of sub-regions comprised in the controlchannel region, information about frequency-domain resources of each ofthe sub-regions, information about a number of time-domain symbols ofeach of the sub-regions, and time-domain symbol position information ofeach of the sub-regions; and wherein a resource occupied by the controlchannel is a resource occupied by one sub-region.
 2. The method forsending a control channel according to claim 1, wherein indicationinformation which is in the first control information and indicatesinformation about a number of time-domain symbols of the control channelcomprises at least one of the following information: whether a durationof the control channel is a long duration or a short duration; astarting symbol index of the control channel; an ending symbol index ofthe control channel; the number of the time-domain symbols of thecontrol channel; or an index of the number of the time-domain symbols ofthe control channel in an agreed set of numbers of time-domain symbols.3. The method for sending a control channel according to claim 1,further comprising at least one of: determining information about anumber of time-domain symbols occupied by the control channel orinformation about a number of frequency domain resources occupied by thecontrol channel according to a type of the second control informationtransmitted on the control channel, wherein different types of secondcontrol information are distinguished from each other by at least one ofthe following information: wherein the second control information is CSIinformation or ACK/NACK information, an information length of the secondcontrol information, or a service type of the data corresponding to thesecond control information; or transmitting the second controlinformation across the multiple time sub-units repeatedly, wherein eachtime sub-unit of the multiple time sub-units comprised in the controlchannel comprises a demodulation reference signal, and each timesub-unit comprises one or more time-domain symbols.
 4. The method forsending a control channel according to claim 1, wherein multiple piecesof second control information of a same type are sent on one controlchannel, wherein different types of second control information aredistinguished from each other by at least one of the followinginformation: whether the control information second control informationis CSI information or ACK/NACK information, an information length of thesecond control information, or a service type of the data correspondingto the second control information; and the multiple pieces of secondcontrol information are multiple pieces of second control informationneeded to be fed back in a current time unit.
 5. The method for sendinga control channel according to claim 1, further comprising when multiplepieces of second control information needed to be fed back in a currenttime unit are sent on one control channel, obtaining resourceinformation of the control channel according to first controlinformation corresponding to a highest time unit index among multiplepieces of first control information related to the multiple pieces ofsecond control information.
 6. The method for sending a control channelaccording to claim 1, wherein a time-frequency-domain position of ademodulation reference signal of the control channel is obtained in oneof the following manners: whether frequency-domain resources occupied bythe demodulation reference signal in one time-domain symbol arecontinuous or discrete is obtained according to the first controlinformation; parameters related to the demodulation reference signal aredetermined according to information about a number of time-domainsymbols of the control channel; the parameters related to thedemodulation reference signal are determined according to a number ofsending beam sets; and the parameters related to the demodulationreference signal are determined according to a sending mode of thecontrol channel, wherein the sending mode comprises a single-layertransmission, a transmission diversity mode and a repeated transmission;wherein a sending beam of the sending beam sets is indicated by at leastone of the following information: information about a resource index ofthe first reference signal, or time-domain information corresponding tothe first reference signal; wherein the first reference signal is areference signal sent by the first communication node or the firstreference signal is a reference signal received by the firstcommunication node.
 7. The method for sending a control channelaccording to claim 1, wherein the first parameter information furthercomprises at least one of the following information: index informationof a time unit at which the first control information is located; orindex information of a time-domain symbol at which the time-domainending position of the first control information is located.
 8. Themethod for sending a control channel according to claim 1, whereindetermining, by the first communication node, the second transmissionparameter information about the control channel according to the firstparameter information comprises: determining, by the first communicationnode, the second transmission parameter information about the controlchannel according to the first parameter information and the firstcontrol information, wherein the first control information satisfies atleast one of the following: the first control information is commoncontrol information; the first control information comprises informationthat notifies a control channel resource set of a current time unit; thefirst control information comprises information that notifies a sendingsequence of multiple sending beams used by the first communication nodeto send the control channel; the first control information comprisesinformation that notifies a correspondence between time-domain regionsof the control channel and the multiple sending beams or sending beamsets used to send the control channel; the first control informationcomprises at least one of information for notifying time-domain resourcecorresponding to each sending beam in the multiple sending beams orinformation for notifying frequency-domain resource corresponding toeach sending beam in the multiple sending beams, wherein the multiplesending beams are used by the first communication node to send thecontrol channel; the first control information comprises at least one ofinformation for notifying time-domain resource corresponding to eachsending beam set in the multiple sending beam sets or information fornotifying frequency-domain resource corresponding to each sending beamset in the multiple sending beam sets, wherein the multiple sending beamsets are used by the first communication node to send the controlchannel; the first control information comprises information thatnotifies a sending beam used by the first communication node to send thecontrol channel; the first control information comprises informationthat notifies a modulation manner used by the first communication nodeto send the control channel; or the first control information comprisesinformation that notifies a coding rate used by the first communicationnode to send the control channel; wherein a sending beam of the sendingbeam sets is indicated by at least one of the following information:information about a resource index of the first reference signal, ortime-domain information corresponding to the first reference signal;wherein the first reference signal is a reference signal sent by thefirst communication node or the first reference signal is a referencesignal received by the first communication node.
 9. The method forsending a control channel according to claim 8, further comprising atleast one of: selecting, by the first communication node, one or morecontrol channel resources from the control channel resource setaccording to a predetermined rule and sending the control channel on theone or more control channel resources; determining, by the firstcommunication node, one or more control channel resources from thecontrol channel resource set and sending at least one of the followinginformation on the one or more selected control channel resources: beamfailure request information, or resource request information;transmitting the second control information in multiple time sub-unitsrepeatedly, wherein time sub-unit of the multiple time sub-unitscomprised in the control channel comprises a demodulation referencesignal, and each time sub-unit comprises one or more time-domainsymbols.
 10. The method for sending a control channel according to claim1, wherein determining, by the first communication node, the secondtransmission parameter information about the control channel accordingto the first parameter information comprises: determining, by the firstcommunication node, the second transmission parameter information aboutthe control channel according to the first parameter information a typeof the second control information, wherein different types of secondcontrol information are distinguished from each other by at least one ofthe following information: whether the control information secondcontrol information is CSI information or ACK/NACK information, or aservice type of the data corresponding to the second controlinformation.
 11. A method for receiving a control channel, comprising:sending first control information to a first communication node;determining second transmission parameter information of the controlchannel according to first parameter information, wherein the firstparameter information comprises at least one of the followinginformation: an information length of second control informationtransmitted on the control channel, or index information of atime-domain symbol at which the first control information correspondingto the control channel is located; and receiving, according to thedetermined second transmission parameter information, the controlchannel sent by the first communication node; wherein the first controlinformation is received by the first communication node and the secondcontrol information is sent by the first communication node, wherein thesecond control information is on the control channel; wherein the secondtransmission parameter information comprises at least one of thefollowing information: information about a control channel region,information about frequency-domain resources occupied by the controlchannel, information about demodulation reference signals of the controlchannel, or information about code-domain resources occupied by thecontrol channel; wherein the information about the control channelregion comprises: a number of sub-regions comprised in the controlchannel region, information about frequency-domain resources of each ofthe sub-regions, information about a number of time-domain symbols ofeach of the sub-regions, and time-domain symbol position information ofeach of the sub-regions; and wherein a resource occupied by the controlchannel is a resource occupied by one sub-region.
 12. The method forreceiving a control channel according to claim 11, wherein indicationinformation which is in the first control information and indicatesinformation about a number of time-domain symbols of the control channelcomprises at least one of the following information: whether a durationof the control channel is a long duration or a short duration; astarting symbol index of the control channel; an ending symbol index ofthe control channel; the number of the time-domain symbols of thecontrol channel; or an index of the number of the time-domain symbols ofthe control channel in an agreed set of numbers of time-domain symbols.13. The method for receiving a control channel according to claim 11,further comprising at least one of: determining information about anumber of time-domain symbols occupied by the control channel orinformation about a number of frequency domain resources occupied by thecontrol channel according to a type of the second control informationtransmitted on the control channel; determining the information aboutthe number of the time-domain symbols of the control channel or theinformation about the number of the frequency domain resources of thecontrol channel according to a capability level of the firstcommunication node; when multiple pieces of second control informationneeded to be fed back in a current time unit are sent on one controlchannel, obtaining resource information of the control channel accordingto first control information corresponding to a highest time unit indexamong multiple pieces of first control information related to themultiple pieces of second control information; or receiving multiplepieces of second control information of a same type on one controlchannel, wherein the multiple pieces of second control information arethe multiple pieces of second control information needed to be receivedfrom the first communication node in a current time unit; whereindifferent types of second control information are distinguished fromeach other by at least one of the following information: whether thesecond control information is CSI information or ACK/NACK information,an information length of the second control information, or a servicetype of the data corresponding to the second control information. 14.The method for receiving a control channel according to claim 11,wherein a time-frequency-domain position of a demodulation referencesignal of the control channel is determined in one of the followingmanners: whether frequency-domain resources occupied by the demodulationreference signal in one time-domain symbol are continuous or discrete isindicated according to the first control information; parameters relatedto the demodulation reference signal are determined according toinformation about a number of time-domain symbols of the controlchannel; the parameters related to the demodulation reference signal aredetermined according to a number of sending beam sets; or the parametersrelated to the demodulation reference signal are determined according toa sending mode of the control channel, wherein the sending modecomprises a single-layer transmission, a transmission diversity mode anda repeated transmission; wherein the sending beam is indicated by atleast one of the following information: information about a resourceindex of the first reference signal, or time-domain informationcorresponding to the first reference signal; wherein the first referencesignal is a reference signal sent by the first communication node or thefirst reference signal is a reference signal received by the firstcommunication node.
 15. The method for receiving a control channelaccording to claim 11, wherein the first control information satisfiesat least one of the following: the first control information is commoncontrol information; the first control information comprises informationthat notifies a control channel resource set of a current time unit; thefirst control information comprises information that notifies a sendingsequence of multiple sending beams used by the first communication nodeto send the control channel; or the first control information comprisesinformation that notifies a correspondence between time-domain regionsof the control channel and the multiple sending beams or sending beamsets used to send the control channel; the first control informationcomprises at least one of information for notifying time-domain resourcecorresponding to each sending beam in the multiple sending beams orinformation for notifying frequency-domain resource corresponding toeach sending beam in the multiple sending beams, wherein the multiplesending beams are used by the first communication node to send thecontrol channel; the first control information comprises at least one ofinformation for notifying time-domain resource corresponding to eachsending beam set in the multiple sending beam sets or information fornotifying frequency-domain resource corresponding to each sending beamset in the multiple sending beam sets, wherein the multiple sending beamsets are used by the first communication node to send the controlchannel; the first control information comprises information thatnotifies a sending beam used by the first communication node to send thecontrol channel; the first control information comprises informationthat notifies a modulation manner used by the first communication nodeto send the control channel; and the first control information comprisesinformation that notifies a coding rate used by the first communicationnode to send the control channel; wherein a sending beam of the sendingbeam sets is indicated by at least one of the following information:information about a resource index of the first reference signal, ortime-domain information corresponding to the first reference signal;wherein the first reference signal is a reference signal sent by thefirst communication node or the first reference signal is a referencesignal received by the first communication node.
 16. A device forsending a control channel, comprising: a receiving unit, which isconfigured to receive first control information sent by the secondcommunication node; a determining unit, which is configured to determinesecond transmission parameter information about the control channelaccording to first parameter information, wherein the first parameterinformation comprises at least one of the following information: aninformation length of a second control information transmitted on thecontrol channel, or index information of a time-domain symbol at whichthe first control information corresponding to the control channel islocated; and a sending unit, which is configured to send the controlchannel to a second communication node according to the secondtransmission parameter information; wherein the second transmissionparameter information comprises at least one of the followinginformation: information about a control channel region, informationabout frequency-domain resources occupied by the control channel,information about demodulation reference signals of the control channel,or information about code-domain resources occupied by the controlchannel; wherein the information about the control channel regioncomprises: a number of sub-regions comprised in the control channelregion, information about frequency-domain resources of each of thesub-regions, information about a number of time-domain symbols of eachof the sub-regions, and time-domain symbol position information of eachof the sub-regions; and wherein a resource occupied by the controlchannel is a resource occupied by one sub-region.
 17. The device forreceiving a control channel according to claim 16, wherein informationabout a number of time-domain symbols occupied by the control channel orinformation about a number of frequency domain resources occupied by thecontrol channel is determined according to a type of the second controlinformation transmitted on the control channel; the information aboutthe number of the time-domain symbols occupied by the control channel orthe information about the number of the frequency domains of the controlchannel is determined according to a capability level information of thefirst communication node; when multiple pieces of second controlinformation needed to be fed back in a current time unit are sent on onecontrol channel, resource information of the control channel is obtainedaccording to first control information corresponding to a highest timeunit index among multiple pieces of first control information related tothe multiple pieces of second control information; or multiple pieces ofsecond control information of a same type are sent on the one controlchannel, wherein the multiple pieces of second control information aremultiple pieces of second control information needed to be fed back inthe current time unit; wherein different types of the second controlinformation are distinguished from each other by at least one of thefollowing information: whether the second control information is CSIinformation or ACK/NACK information, an information length of the secondcontrol information, or a service type of the data corresponding to thesecond control information.
 18. A device for receiving a controlchannel, comprising: a processor and a storage device, wherein thestorage device stores processor-executable programs for executing themethod according to claim 11.